diff --git a/cache.manifest b/cache.manifest
index 25bf23aa..873c54bb 100644
--- a/cache.manifest
+++ b/cache.manifest
@@ -1 +1 @@
-CACHE MANIFEST# v33CACHE:index.htmlcss/bootstrap.csscss/jgrowl.csscss/main.cssjs/async-runner.jsjs/bootstrap.jsjs/config.jsjs/custo.github.jsjs/dropbox.jsjs/gdrive.jsjs/jgrowl.jsjs/jquery.jsjs/jquery-ui.jsjs/layout.jsjs/main.jsjs/Markdown.Converter.jsjs/Markdown.Editor.jsjs/Markdown.Sanitizer.jsjs/require.jsjs/synchronizer.jsimg/ajax-loader.gifimg/dropbox.pngimg/gdrive.pngimg/glyphicons-halflings.pngimg/glyphicons-halflings-white.pngimg/stackedit-16.pngimg/stackedit-32.icoNETWORK:*
+CACHE MANIFEST# v33CACHE:index.htmlcss/bootstrap.csscss/jgrowl.csscss/main.cssjs/async-runner.jsjs/bootstrap.jsjs/config.jsjs/custo.github.jsjs/dropbox-helper.jsjs/github.jsjs/google-helper.jsjs/jgrowl.jsjs/jquery.jsjs/jquery-ui.jsjs/layout.jsjs/main.jsjs/Markdown.Converter.jsjs/Markdown.Editor.jsjs/Markdown.Sanitizer.jsjs/publisher.jsjs/require.jsjs/synchronizer.jsjs/underscore-min.jsimg/ajax-loader.gifimg/glyphicons-halflings.pngimg/glyphicons-halflings-white.pngimg/icons.pngimg/stackedit-32.icoimg/stackedit-promo.pngNETWORK:*
diff --git a/css/main.css b/css/main.css
index c35b3684..29e6d16b 100644
--- a/css/main.css
+++ b/css/main.css
@@ -225,18 +225,53 @@ hr {
 	background-position: -456px -168px;
 }
 
-.icon-gdrive {
-	background-image: url("../img/gdrive.png") !important;
+.icon-stackedit {
+	background-image: url("../img/icons.png") !important;
 	width: 16px;
 	height: 16px;
-	background-position: 0 0;
+	background-position: -1px 0;
+}
+
+.icon-gdrive {
+	background-image: url("../img/icons.png") !important;
+	width: 16px;
+	height: 16px;
+	background-position: -19px 0;
 }
 
 .icon-dropbox {
-	background-image: url("../img/dropbox.png") !important;
+	background-image: url("../img/icons.png") !important;
 	width: 16px;
 	height: 16px;
-	background-position: 0 0;
+	background-position: -37px 0;
+}
+
+.icon-github {
+	background-image: url("../img/icons.png") !important;
+	width: 16px;
+	height: 16px;
+	background-position: -55px 0;
+}
+
+.icon-blogger {
+	background-image: url("../img/icons.png") !important;
+	width: 16px;
+	height: 16px;
+	background-position: -73px 0;
+}
+
+.icon-tumblr {
+	background-image: url("../img/icons.png") !important;
+	width: 16px;
+	height: 16px;
+	background-position: -91px 0;
+}
+
+.icon-wordpress {
+	background-image: url("../img/icons.png") !important;
+	width: 16px;
+	height: 16px;
+	background-position: -109px 0;
 }
 
 .icon-spinner {
diff --git a/dropbox-oauth-receiver.html b/dropbox-oauth-receiver.html
index a0dac02a..7659eebd 100644
--- a/dropbox-oauth-receiver.html
+++ b/dropbox-oauth-receiver.html
@@ -1,7 +1,7 @@
 <!DOCTYPE html>
 <html lang="en">
   <head>
-    <script src="js/dropbox.min.js"></script>
+    <script src="lib/dropbox.js"></script>
     <script type="text/javascript">
       Dropbox.Drivers.Popup.oauthReceiver();
     </script>
diff --git a/img/dropbox.png b/img/dropbox.png
deleted file mode 100644
index c2f10292..00000000
Binary files a/img/dropbox.png and /dev/null differ
diff --git a/img/gdrive.png b/img/gdrive.png
deleted file mode 100644
index 6346fb2b..00000000
Binary files a/img/gdrive.png and /dev/null differ
diff --git a/img/icons.png b/img/icons.png
new file mode 100644
index 00000000..b13b1b87
Binary files /dev/null and b/img/icons.png differ
diff --git a/index.html b/index.html
index f4bba471..2b58c763 100644
--- a/index.html
+++ b/index.html
@@ -23,7 +23,10 @@
 				<li class="btn-group"><button class="btn action-force-sync"
 						title="Synchronize">
 						<i class="icon-refresh"></i>
-					</button></li>
+					</button><button class="btn action-publish"
+                        title="Publish">
+                        <i class="icon-share"></i>
+                    </button></li>
 				<li class="btn-group"><button class="btn action-create-file"
 						title="New local document">
 						<i class="icon-file"></i>
@@ -39,8 +42,8 @@
 					<ul id="file-selector" class="dropdown-menu">
 					</ul></li>
 				<li class="btn-group"><a class="btn dropdown-toggle"
-					data-toggle="dropdown" href="#" title="Menu"><img
-						src="img/stackedit-16.png" />&nbsp;&nbsp;<b class="caret"></b></a>
+					data-toggle="dropdown" href="#" title="Menu"><i
+						class="icon-stackedit"></i>&nbsp;&nbsp;<b class="caret"></b></a>
 					<ul class="dropdown-menu">
 						<li><a class="action-download-md" href="#"><i
 								class="icon-download-alt"></i> Save as MD</a></li>
@@ -67,6 +70,22 @@
 							data-target="#modal-manage-sync"><i class="icon-refresh"></i>
 								Manage synchronization</a></li>
 						<li class="divider"></li>
+                        <li class="dropdown-submenu"><a href="#"><i
+                                class="icon-share"></i> Publish</a>
+                            <ul class="dropdown-menu">
+                                <li><a href="#" class="action-publish-github"><i
+                                class="icon-github"></i> GitHub</a></li>
+                                <li><a href="#" class="action-publish-blogger"><i
+                                class="icon-blogger"></i> Blogger</a></li>
+                                <li><a href="#" class="action-publish-wordpress"><i
+                                class="icon-wordpress"></i> WordPress</a></li>
+                                <li><a href="#" class="action-publish-tumblr"><i
+                                class="icon-tumblr"></i> Tumblr</a></li>
+                            </ul></li>
+                        <li><a href="#" data-toggle="modal"
+                            data-target="#modal-manage-publication"><i class="icon-share"></i>
+                                Manage publication</a></li>
+                        <li class="divider"></li>
 						<li><a href="#" data-toggle="modal"
 							data-target="#modal-settings" class="action-load-settings"><i
 								class="icon-cog"></i> Settings</a></li>
@@ -237,6 +256,56 @@
 		</div>
 	</div>
 
+    <div id="modal-publish-existing" class="modal hide">
+        <div class="modal-header">
+            <button type="button" class="close" data-dismiss="modal"
+                aria-hidden="true">&times;</button>
+            <h3>Publish</h3>
+        </div>
+        <div class="modal-body">
+            <dl class="dl-horizontal">
+                <dt>Would you like to:</dt>
+                <dd>
+                    <label class="radio"> <input type="radio"
+                        name="radio-publish-existing" value="new">
+                        Create a new Post
+                    </label> <label class="radio"> <input type="radio"
+                        name="radio-publish-existing" value="existing"> Edit an existing post
+                    </label>
+                </dd>
+            </dl>
+        </div>
+        <div class="modal-footer">
+            <a href="#" class="btn" data-dismiss="modal">Cancel</a> <a href="#"
+                data-dismiss="modal" class="btn btn-primary action-publish-next">Next</a>
+        </div>
+    </div>
+
+    <div id="modal-publish-format" class="modal hide">
+        <div class="modal-header">
+            <button type="button" class="close" data-dismiss="modal"
+                aria-hidden="true">&times;</button>
+            <h3>Publish</h3>
+        </div>
+        <div class="modal-body">
+            <dl class="dl-horizontal">
+                <dt>Publish as:</dt>
+                <dd>
+                    <label class="radio"> <input type="radio"
+                        name="radio-publish-format" value="markdown">
+                        Markdown format
+                    </label> <label class="radio"> <input type="radio"
+                        name="radio-publish-format" value="html"> HTML format
+                    </label>
+                </dd>
+            </dl>
+        </div>
+        <div class="modal-footer">
+            <a href="#" class="btn" data-dismiss="modal">Cancel</a> <a href="#"
+                data-dismiss="modal" class="btn btn-primary action-publish-finish">OK</a>
+        </div>
+    </div>
+
 	<div id="modal-settings" class="modal hide">
 		<div class="modal-header">
 			<button type="button" class="close" data-dismiss="modal"
diff --git a/js/core.js b/js/core.js
index 523b4366..005e8786 100644
--- a/js/core.js
+++ b/js/core.js
@@ -271,7 +271,110 @@ define(["jquery", "bootstrap", "jgrowl", "layout", "Markdown.Editor"], function(
 	    return x.join('');
 	};
 	
+	// CRC32 algorithm
+	var mHash = [ 0, 1996959894, 3993919788, 2567524794, 124634137,
+		1886057615, 3915621685, 2657392035, 249268274, 2044508324,
+		3772115230, 2547177864, 162941995, 2125561021, 3887607047,
+		2428444049, 498536548, 1789927666, 4089016648, 2227061214,
+		450548861, 1843258603, 4107580753, 2211677639, 325883990,
+		1684777152, 4251122042, 2321926636, 335633487, 1661365465,
+		4195302755, 2366115317, 997073096, 1281953886, 3579855332,
+		2724688242, 1006888145, 1258607687, 3524101629, 2768942443,
+		901097722, 1119000684, 3686517206, 2898065728, 853044451,
+		1172266101, 3705015759, 2882616665, 651767980, 1373503546,
+		3369554304, 3218104598, 565507253, 1454621731, 3485111705,
+		3099436303, 671266974, 1594198024, 3322730930, 2970347812,
+		795835527, 1483230225, 3244367275, 3060149565, 1994146192,
+		31158534, 2563907772, 4023717930, 1907459465, 112637215,
+		2680153253, 3904427059, 2013776290, 251722036, 2517215374,
+		3775830040, 2137656763, 141376813, 2439277719, 3865271297,
+		1802195444, 476864866, 2238001368, 4066508878, 1812370925,
+		453092731, 2181625025, 4111451223, 1706088902, 314042704,
+		2344532202, 4240017532, 1658658271, 366619977, 2362670323,
+		4224994405, 1303535960, 984961486, 2747007092, 3569037538,
+		1256170817, 1037604311, 2765210733, 3554079995, 1131014506,
+		879679996, 2909243462, 3663771856, 1141124467, 855842277,
+		2852801631, 3708648649, 1342533948, 654459306, 3188396048,
+		3373015174, 1466479909, 544179635, 3110523913, 3462522015,
+		1591671054, 702138776, 2966460450, 3352799412, 1504918807,
+		783551873, 3082640443, 3233442989, 3988292384, 2596254646,
+		62317068, 1957810842, 3939845945, 2647816111, 81470997, 1943803523,
+		3814918930, 2489596804, 225274430, 2053790376, 3826175755,
+		2466906013, 167816743, 2097651377, 4027552580, 2265490386,
+		503444072, 1762050814, 4150417245, 2154129355, 426522225,
+		1852507879, 4275313526, 2312317920, 282753626, 1742555852,
+		4189708143, 2394877945, 397917763, 1622183637, 3604390888,
+		2714866558, 953729732, 1340076626, 3518719985, 2797360999,
+		1068828381, 1219638859, 3624741850, 2936675148, 906185462,
+		1090812512, 3747672003, 2825379669, 829329135, 1181335161,
+		3412177804, 3160834842, 628085408, 1382605366, 3423369109,
+		3138078467, 570562233, 1426400815, 3317316542, 2998733608,
+		733239954, 1555261956, 3268935591, 3050360625, 752459403,
+		1541320221, 2607071920, 3965973030, 1969922972, 40735498,
+		2617837225, 3943577151, 1913087877, 83908371, 2512341634,
+		3803740692, 2075208622, 213261112, 2463272603, 3855990285,
+		2094854071, 198958881, 2262029012, 4057260610, 1759359992,
+		534414190, 2176718541, 4139329115, 1873836001, 414664567,
+		2282248934, 4279200368, 1711684554, 285281116, 2405801727,
+		4167216745, 1634467795, 376229701, 2685067896, 3608007406,
+		1308918612, 956543938, 2808555105, 3495958263, 1231636301,
+		1047427035, 2932959818, 3654703836, 1088359270, 936918000,
+		2847714899, 3736837829, 1202900863, 817233897, 3183342108,
+		3401237130, 1404277552, 615818150, 3134207493, 3453421203,
+		1423857449, 601450431, 3009837614, 3294710456, 1567103746,
+		711928724, 3020668471, 3272380065, 1510334235, 755167117 ];
+	core.crc32 = function(str) {
+		var n = 0, crc = -1;
+		for ( var i = 0; i < str.length; i++) {
+			n = (crc ^ str.charCodeAt(i)) & 0xFF;
+			crc = (crc >>> 8) ^ mHash[n];
+		}
+		crc = crc ^ (-1);
+		if (crc < 0) {
+	    	crc = 0xFFFFFFFF + crc + 1;
+	    }
+	    return crc.toString(16);
+	};
+	
+	// Used to setup an empty localStorage 
+	function setupLocalStorage() {
+		if (localStorage["file.counter"] === undefined 
+			|| localStorage["file.list"] === undefined) {
+			localStorage["file.counter"] = "0";
+			localStorage["file.list"] = ";";
+		}		
+	}
+
+	// Used to upgrade an existing localStorage
+	function upgradeLocalStorage() {
+		var version = localStorage["version"];
+		
+		// from v0 to v1
+		if(version === undefined) {
+			var fileIndexList = localStorage["file.list"].split(";");
+			for ( var i = 1; i < fileIndexList.length - 1; i++) {
+				var fileIndex = fileIndexList[i];
+				localStorage[fileIndex + ".publish"] = ";";
+				var titleCRC = core.crc32(localStorage[fileIndex + ".title"]);
+				var contentCRC = core.crc32(localStorage[fileIndex + ".content"]);
+				var fileSyncIndexList = localStorage[fileIndex + ".sync"].split(";");
+				for ( var j = 1; j < fileSyncIndexList.length - 1; j++) {
+					var fileSyncIndex = fileSyncIndexList[j];
+					localStorage[fileSyncIndex + ".contentCRC"] = contentCRC;
+					// We store title CRC only for Google Drive synchronization
+					if(localStorage[fileSyncIndex + ".etag"] !== undefined) {
+						localStorage[fileSyncIndex + ".titleCRC"] = titleCRC;
+					}
+				}
+			}
+			version = "v1";
+		}
+		localStorage["version"] = version;
+	}
+
 	core.init = function() {
+		setupLocalStorage();
+		upgradeLocalStorage();
 
 		// jGrowl configuration
 		$.jGrowl.defaults.life = 5000;
diff --git a/js/dropbox.js b/js/dropbox-helper.js
similarity index 87%
rename from js/dropbox.js
rename to js/dropbox-helper.js
index bb074bce..b31baabd 100644
--- a/js/dropbox.js
+++ b/js/dropbox-helper.js
@@ -6,7 +6,7 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 	var client = undefined;
 	var authenticated = false;
 
-	var dropbox = {};
+	var dropboxHelper = {};
 
 	// Try to connect dropbox by downloading client.js
 	function connect(callback) {
@@ -24,7 +24,7 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 				return;
 			}
 			$.ajax({
-				url : "js/dropbox.min.js",
+				url : "lib/dropbox.js",
 				dataType : "script", timeout : AJAX_TIMEOUT
 			}).done(function() {
 				asyncTask.success();
@@ -96,7 +96,7 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 		});
 	}
 
-	dropbox.upload = function(path, content, callback) {
+	dropboxHelper.upload = function(path, content, callback) {
 		callback = callback || core.doNothing;
 		authenticate(function() {
 			if (client === undefined) {
@@ -128,7 +128,7 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 		});
 	};
 
-	dropbox.checkUpdates = function(lastChangeId, callback) {
+	dropboxHelper.checkUpdates = function(lastChangeId, callback) {
 		callback = callback || core.doNothing;
 		authenticate(function() {
 			if (client === undefined) {
@@ -177,7 +177,7 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 		});
 	};
 
-	dropbox.downloadMetadata = function(paths, callback, result) {
+	dropboxHelper.downloadMetadata = function(paths, callback, result) {
 		callback = callback || core.doNothing;
 		result = result || [];
 		if(paths.length === 0) {
@@ -204,13 +204,13 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 				});
 			};
 			asyncTask.onSuccess = function() {
-				dropbox.downloadMetadata(paths, callback, result);
+				dropboxHelper.downloadMetadata(paths, callback, result);
 			};
 			asyncTaskRunner.addTask(asyncTask);
 		});
 	};
 
-	dropbox.downloadContent = function(objects, callback, result) {
+	dropboxHelper.downloadContent = function(objects, callback, result) {
 		callback = callback || core.doNothing;
 		result = result || [];
 		if(objects.length === 0) {
@@ -252,7 +252,7 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 				});
 			};
 			asyncTask.onSuccess = function() {
-				dropbox.downloadContent(objects, callback, result);
+				dropboxHelper.downloadContent(objects, callback, result);
 			};
 			asyncTaskRunner.addTask(asyncTask);
 		});
@@ -322,7 +322,7 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 		});
 	}
 	
-	dropbox.picker = function(callback) {
+	dropboxHelper.picker = function(callback) {
 		callback = callback || core.doNothing;
 		loadPicker(function() {
 			if (pickerLoaded === false) {
@@ -349,12 +349,12 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 		});
 	};
 
-	dropbox.importFiles = function(paths) {
-		dropbox.downloadMetadata(paths, function(result) {
+	dropboxHelper.importFiles = function(paths) {
+		dropboxHelper.downloadMetadata(paths, function(result) {
 			if(result === undefined) {
 				return;
 			}
-			dropbox.downloadContent(result, function(result) {
+			dropboxHelper.downloadContent(result, function(result) {
 				if(result === undefined) {
 					return;
 				}
@@ -362,6 +362,8 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 					var file = result[i];
 					fileSyncIndex = SYNC_PROVIDER_DROPBOX + encodeURIComponent(file.path.toLowerCase());
 					localStorage[fileSyncIndex + ".version"] = file.versionTag;
+					var contentCRC = core.crc32(file.content);
+					localStorage[fileSyncIndex + ".contentCRC"] = contentCRC;
 					var fileIndex = fileManager.createFile(file.name, file.content, [fileSyncIndex]);
 					fileManager.selectFile(fileIndex);
 					core.showMessage('"' + file.name + '" imported successfully from Dropbox.');
@@ -370,11 +372,11 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 		});
 	};
 
-	dropbox.init = function(fileManagerModule) {
+	dropboxHelper.init = function(fileManagerModule) {
 		fileManager = fileManagerModule;
 	};
 	
-	dropbox.checkPath = function(path) {
+	dropboxHelper.checkPath = function(path) {
 		if(!path.match(/^[^\\<>:"\|?\*]+$/)) {
 			core.showError('"' + path + '" contains invalid characters.');
 			return undefined;
@@ -385,5 +387,5 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 		return path;
 	};
 	
-	return dropbox;
+	return dropboxHelper;
 });
diff --git a/js/dropbox.min.js b/js/dropbox.min.js
deleted file mode 100644
index 40fcec61..00000000
--- a/js/dropbox.min.js
+++ /dev/null
@@ -1,5 +0,0 @@
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t={key:this.oauth.key,sandbox:this.sandbox},this.oauth.secret&&(t.secret=this.oauth.secret),this.oauth.token&&(t.token=this.oauth.token,t.tokenSecret=this.oauth.tokenSecret),this.uid&&(t.uid=this.uid),this.authState!==n.ERROR&&this.authState!==n.RESET&&this.authState!==n.DONE&&this.authState!==n.SIGNED_OFF&&(t.authState=this.authState),this.apiServer!==this.defaultApiServer()&&(t.server=this.apiServer),this.authServer!==this.defaultAuthServer()&&(t.authServer=this.authServer),this.fileServer!==this.defaultFileServer()&&(t.fileServer=this.fileServer),this.downloadServer!==this.defaultDownloadServer()&&(t.downloadServer=this.downloadServer),this._credentials=t},e}(),n=t.Client,t.Drivers.BrowserBase=function(){function e(t){this.rememberUser=(null!=t?t.rememberUser:void 0)||!1,this.useQuery=(null!=t?t.useQuery:void 0)||!1,this.scope=(null!=t?t.scope:void 0)||"default",this.storageKey=null,this.dbTokenRe=RegExp("(#|\\?|&)dboauth_token=([^&#]+)(&|#|$)"),this.rejectedRe=RegExp("(#|\\?|&)not_approved=true(&|#|$)"),this.tokenRe=RegExp("(#|\\?|&)oauth_token=([^&#]+)(&|#|$)")}return e.prototype.onAuthStateChange=function(t,e){var r=this;switch(this.setStorageKey(t),t.authState){case n.RESET:return this.loadCredentials(function(n){return n?n.authState?(t.setCredentials(n),e()):r.rememberUser?(t.setCredentials(n),t.getUserInfo(function(n){return n?(t.reset(),r.forgetCredentials(e)):e()})):r.forgetCredentials(e):e()});case n.REQUEST:return this.storeCredentials(t.credentials(),e);case n.DONE:return this.rememberUser?this.storeCredentials(t.credentials(),e):this.forgetCredentials(e);case n.SIGNED_OFF:return this.forgetCredentials(e);case n.ERROR:return this.forgetCredentials(e);default:return e(),this}},e.prototype.setStorageKey=function(t){return this.storageKey="dropbox-auth:"+this.scope+":"+t.appHash(),this},e.prototype.storeCredentials=function(t,e){return localStorage.setItem(this.storageKey,JSON.stringify(t)),e(),this},e.prototype.loadCredentials=function(t){var e,r;if(r=localStorage.getItem(this.storageKey),!r)return t(null),this;try{t(JSON.parse(r))}catch(n){e=n,t(null)}return this},e.prototype.forgetCredentials=function(t){return localStorage.removeItem(this.storageKey),t(),this},e.prototype.computeUrl=function(t){var e,r,n,o;return o="_dropboxjs_scope="+encodeURIComponent(this.scope)+"&dboauth_token=",r=t,-1===r.indexOf("#")?e=null:(n=r.split("#",2),r=n[0],e=n[1]),this.useQuery?(r+=-1===r.indexOf("?")?"?"+o:"&"+o,e?[r,"#"+e]:[r,""]):[r+"#?"+o,""]},e.prototype.locationToken=function(e){var r,n,o;return r=e||t.Drivers.BrowserBase.currentLocation(),o="_dropboxjs_scope="+encodeURIComponent(this.scope)+"&",-1===("function"==typeof r.indexOf?r.indexOf(o):void 0)?null:this.rejectedRe.test(r)?(n=this.dbTokenRe.exec(r),n?decodeURIComponent(n[2]):null):(n=this.tokenRe.exec(r),n?decodeURIComponent(n[2]):null)},e.currentLocation=function(){return window.location.href},e}(),t.Drivers.Redirect=function(e){function r(e){var n;r.__super__.constructor.call(this,e),n=this.computeUrl(t.Drivers.BrowserBase.currentLocation()),this.receiverUrl1=n[0],this.receiverUrl2=n[1]}return P(r,e),r.prototype.onAuthStateChange=function(t,e){var o,i=this;return o=function(){return function(){return r.__super__.onAuthStateChange.call(i,t,e)}}(),this.setStorageKey(t),t.authState===n.RESET?this.loadCredentials(function(t){return t&&t.authState?t.token===i.locationToken()&&t.authState===n.REQUEST?(t.authState=n.AUTHORIZED,i.storeCredentials(t,o)):i.forgetCredentials(o):o()}):o()},r.prototype.url=function(t){return this.receiverUrl1+encodeURIComponent(t)+this.receiverUrl2},r.prototype.doAuthorize=function(t){return window.location.assign(t)},r}(t.Drivers.BrowserBase),t.Drivers.Popup=function(e){function r(t){var e;r.__super__.constructor.call(this,t),e=this.computeUrl(this.baseUrl(t)),this.receiverUrl1=e[0],this.receiverUrl2=e[1]}return P(r,e),r.prototype.onAuthStateChange=function(t,e){var o,i=this;return o=function(){return function(){return r.__super__.onAuthStateChange.call(i,t,e)}}(),this.setStorageKey(t),t.authState===n.RESET?this.loadCredentials(function(t){return t&&t.authState?i.forgetCredentials(o):o()}):o()},r.prototype.doAuthorize=function(t,e,r,n){return this.listenForMessage(e,n),this.openWindow(t)},r.prototype.url=function(t){return this.receiverUrl1+encodeURIComponent(t)+this.receiverUrl2},r.prototype.baseUrl=function(e){var r;if(e){if(e.receiverUrl)return e.receiverUrl;if(e.receiverFile)return r=t.Drivers.BrowserBase.currentLocation().split("/"),r[r.length-1]=e.receiverFile,r.join("/")}return t.Drivers.BrowserBase.currentLocation()},r.prototype.openWindow=function(t){return window.open(t,"_dropboxOauthSigninWindow",this.popupWindowSpec(980,700))},r.prototype.popupWindowSpec=function(t,e){var r,n,o,i,s,a,h,u,l,p;return s=null!=(h=window.screenX)?h:window.screenLeft,a=null!=(u=window.screenY)?u:window.screenTop,i=null!=(l=window.outerWidth)?l:document.documentElement.clientWidth,r=null!=(p=window.outerHeight)?p:document.documentElement.clientHeight,n=Math.round(s+(i-t)/2),o=Math.round(a+(r-e)/2.5),s>n&&(n=s),a>o&&(o=a),"width="+t+",height="+e+","+("left="+n+",top="+o)+"dialog=yes,dependent=yes,scrollbars=yes,location=yes"},r.prototype.listenForMessage=function(e,r){var n,o=this;return n=function(i){var s;return s=i.data?i.data:i,o.locationToken(s)===e?(e=null,window.removeEventListener("message",n),t.Drivers.Popup.onMessage.removeListener(n),r()):void 0},window.addEventListener("message",n,!1),t.Drivers.Popup.onMessage.addListener(n)},r.oauthReceiver=function(){return window.addEventListener("load",function(){var t,e,r;if(r=window.opener,window.parent!==window.top&&(r||(r=window.parent)),r){try{r.postMessage(window.location.href,"*")}catch(n){e=n}try{r.Dropbox.Drivers.Popup.onMessage.dispatch(window.location.href)}catch(n){t=n}}return window.close()})},r.onMessage=new t.EventSource,r}(t.Drivers.BrowserBase),e=null,r=null,"undefined"!=typeof chrome&&null!==chrome&&(chrome.runtime&&(chrome.runtime.onMessage&&(e=chrome.runtime.onMessage),chrome.runtime.sendMessage&&(r=function(t){return chrome.runtime.sendMessage(t)})),chrome.extension&&(chrome.extension.onMessage&&(e||(e=chrome.extension.onMessage)),chrome.extension.sendMessage&&(r||(r=function(t){return chrome.extension.sendMessage(t)}))),e||function(){var e,r;return r=function(e){return e.Dropbox?(t.Drivers.Chrome.prototype.onMessage=e.Dropbox.Drivers.Chrome.onMessage,t.Drivers.Chrome.prototype.sendMessage=e.Dropbox.Drivers.Chrome.sendMessage):(e.Dropbox=t,t.Drivers.Chrome.prototype.onMessage=new t.EventSource,t.Drivers.Chrome.prototype.sendMessage=function(e){return t.Drivers.Chrome.prototype.onMessage.dispatch(e)})},chrome.extension&&chrome.extension.getBackgroundPage&&(e=chrome.extension.getBackgroundPage())?r(e):chrome.runtime&&chrome.runtime.getBackgroundPage?chrome.runtime.getBackgroundPage(function(t){return r(t)}):void 0}()),t.Drivers.Chrome=function(n){function o(t){var e,r;o.__super__.constructor.call(this,t),e=t&&t.receiverPath||"chrome_oauth_receiver.html",this.rememberUser=!0,this.useQuery=!0,r=this.computeUrl(this.expandUrl(e)),this.receiverUrl=r[0],this.receiverUrl2=r[1],this.storageKey="dropbox_js_"+this.scope+"_credentials"}return P(o,n),o.prototype.onMessage=e,o.prototype.sendMessage=r,o.prototype.expandUrl=function(t){return chrome.runtime&&chrome.runtime.getURL?chrome.runtime.getURL(t):chrome.extension&&chrome.extension.getURL?chrome.extension.getURL(t):t},o.prototype.onAuthStateChange=function(e,r){var n=this;switch(e.authState){case t.Client.RESET:return this.loadCredentials(function(t){if(t){if(t.authState)return n.forgetCredentials(r);e.setCredentials(t)}return r()});case t.Client.DONE:return this.storeCredentials(e.credentials(),r);case t.Client.SIGNED_OFF:return this.forgetCredentials(r);case t.Client.ERROR:return this.forgetCredentials(r);default:return r()}},o.prototype.doAuthorize=function(t,e,r,n){var o,i,s,a,h=this;return(null!=(i=chrome.identity)?i.launchWebAuthFlow:void 0)?chrome.identity.launchWebAuthFlow({url:t,interactive:!0},function(t){return h.locationToken(t)===e?n():void 0}):(null!=(s=chrome.experimental)?null!=(a=s.identity)?a.launchWebAuthFlow:void 0:void 0)?chrome.experimental.identity.launchWebAuthFlow({url:t,interactive:!0},function(t){return h.locationToken(t)===e?n():void 0}):(o={handle:null},this.listenForMessage(e,o,n),this.openWindow(t,function(t){return o.handle=t}))},o.prototype.openWindow=function(t,e){return chrome.tabs&&chrome.tabs.create?(chrome.tabs.create({url:t,active:!0,pinned:!1},function(t){return e(t)}),this):this},o.prototype.closeWindow=function(t){return chrome.tabs&&chrome.tabs.remove&&t.id?(chrome.tabs.remove(t.id),this):chrome.app&&chrome.app.window&&t.close?(t.close(),this):this},o.prototype.url=function(t){return this.receiverUrl+encodeURIComponent(t)},o.prototype.listenForMessage=function(t,e,r){var n,o=this;return n=function(i,s){return s&&s.tab&&s.tab.url.substring(0,o.receiverUrl.length)!==o.receiverUrl||!i.dropbox_oauth_receiver_href?void 0:o.locationToken(i.dropbox_oauth_receiver_href)===t?(e.handle&&o.closeWindow(e.handle),o.onMessage.removeListener(n),r()):void 0},this.onMessage.addListener(n)},o.prototype.storeCredentials=function(t,e){var r;return r={},r[this.storageKey]=t,chrome.storage.local.set(r,e),this},o.prototype.loadCredentials=function(t){var e=this;return chrome.storage.local.get(this.storageKey,function(r){return t(r[e.storageKey]||null)}),this},o.prototype.forgetCredentials=function(t){return chrome.storage.local.remove(this.storageKey,t),this},o.oauthReceiver=function(){return window.addEventListener("load",function(){var e;return e=new t.Drivers.Chrome,e.sendMessage({dropbox_oauth_receiver_href:window.location.href}),window.close?window.close():void 0})},o}(t.Drivers.BrowserBase),t.Drivers.Cordova=function(t){function e(t){this.rememberUser=(null!=t?t.rememberUser:void 0)||!1,this.scope=(null!=t?t.scope:void 0)||"default"}return P(e,t),e.prototype.doAuthorize=function(t,e,r,n){var o,i,s,a;return i=window.open(t,"_blank","location=yes"),a=!1,o=/^[^/]*\/\/[^/]*\//.exec(t)[0],s=function(e){return e.url===t&&a===!1?(a=!0,void 0):e.url&&e.url.substring(0,o.length)!==o?(a=!1,void 0):"exit"===e.type||a?(i.removeEventListener("loadstop",s),i.removeEventListener("exit",s),"exit"!==e.type&&i.close(),n()):void 0},i.addEventListener("loadstop",s),i.addEventListener("exit",s)},e.prototype.url=function(){return null},e.prototype.onAuthStateChange=function(t,r){var o,i=this;return o=function(){return function(){return e.__super__.onAuthStateChange.call(i,t,r)}}(),this.setStorageKey(t),t.authState===n.RESET?this.loadCredentials(function(t){return t&&t.authState?i.forgetCredentials(o):o()}):o()},e}(t.Drivers.BrowserBase),t.Drivers.NodeServer=function(){function t(t){this.port=(null!=t?t.port:void 0)||8912,this.faviconFile=(null!=t?t.favicon:void 0)||null,this.fs=require("fs"),this.http=require("http"),this.open=require("open"),this.callbacks={},this.nodeUrl=require("url"),this.createApp()}return t.prototype.url=function(t){return"http://localhost:"+this.port+"/oauth_callback?dboauth_token="+encodeURIComponent(t)},t.prototype.doAuthorize=function(t,e,r,n){return this.callbacks[e]=n,this.openBrowser(t)},t.prototype.openBrowser=function(t){if(!t.match(/^https?:\/\//))throw Error("Not a http/https 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this.cursorTag},e}(),t.PullChange=function(){function e(e){this.path=e[0],this.stat=t.Stat.parse(e[1]),this.stat?this.wasRemoved=!1:(this.stat=null,this.wasRemoved=!0)}return e.parse=function(e){return e&&"object"==typeof e?new t.PullChange(e):e},e.prototype.path=void 0,e.prototype.wasRemoved=void 0,e.prototype.stat=void 0,e}(),t.RangeInfo=function(){function e(t){var e;(e=/^bytes (\d*)-(\d*)\/(.*)$/.exec(t))?(this.start=parseInt(e[1]),this.end=parseInt(e[2]),this.size="*"===e[3]?null:parseInt(e[3])):(this.start=0,this.end=0,this.size=null)}return e.parse=function(e){return"string"==typeof e?new t.RangeInfo(e):e},e.prototype.start=null,e.prototype.size=null,e.prototype.end=null,e}(),t.PublicUrl=function(){function e(t,e){this.url=t.url,this.expiresAt=new Date(Date.parse(t.expires)),this.isDirect=e===!0?!0:e===!1?!1:"direct"in t?t.direct:864e5>=Date.now()-this.expiresAt,this.isPreview=!this.isDirect,this._json=null}return e.parse=function(e,r){return e&&"object"==typeof e?new t.PublicUrl(e,r):e},e.prototype.url=null,e.prototype.expiresAt=null,e.prototype.isDirect=null,e.prototype.isPreview=null,e.prototype.json=function(){return this._json||(this._json={url:this.url,expires:""+this.expiresAt,direct:this.isDirect})},e}(),t.CopyReference=function(){function e(t){"object"==typeof t?(this.tag=t.copy_ref,this.expiresAt=new Date(Date.parse(t.expires)),this._json=t):(this.tag=t,this.expiresAt=new Date(1e3*Math.ceil(Date.now()/1e3)),this._json=null)}return e.parse=function(e){return!e||"object"!=typeof e&&"string"!=typeof e?e:new t.CopyReference(e)},e.prototype.tag=null,e.prototype.expiresAt=null,e.prototype.json=function(){return this._json||(this._json={copy_ref:this.tag,expires:""+this.expiresAt})},e}(),t.Stat=function(){function e(t){var e,r,n,o;switch(this._json=t,this.path=t.path,"/"!==this.path.substring(0,1)&&(this.path="/"+this.path),e=this.path.length-1,e>=0&&"/"===this.path.substring(e)&&(this.path=this.path.substring(0,e)),r=this.path.lastIndexOf("/"),this.name=this.path.substring(r+1),this.isFolder=t.is_dir||!1,this.isFile=!this.isFolder,this.isRemoved=t.is_deleted||!1,this.typeIcon=t.icon,this.modifiedAt=(null!=(n=t.modified)?n.length:void 0)?new Date(Date.parse(t.modified)):null,this.clientModifiedAt=(null!=(o=t.client_mtime)?o.length:void 0)?new Date(Date.parse(t.client_mtime)):null,t.root){case"dropbox":this.inAppFolder=!1;break;case"app_folder":this.inAppFolder=!0;break;default:this.inAppFolder=null}this.size=t.bytes||0,this.humanSize=t.size||"",this.hasThumbnail=t.thumb_exists||!1,this.isFolder?(this.versionTag=t.hash,this.mimeType=t.mime_type||"inode/directory"):(this.versionTag=t.rev,this.mimeType=t.mime_type||"application/octet-stream")}return e.parse=function(e){return e&&"object"==typeof e?new t.Stat(e):e},e.prototype.path=null,e.prototype.name=null,e.prototype.inAppFolder=null,e.prototype.isFolder=null,e.prototype.isFile=null,e.prototype.isRemoved=null,e.prototype.typeIcon=null,e.prototype.versionTag=null,e.prototype.mimeType=null,e.prototype.size=null,e.prototype.humanSize=null,e.prototype.hasThumbnail=null,e.prototype.modifiedAt=null,e.prototype.clientModifiedAt=null,e.prototype.json=function(){return this._json},e}(),t.UploadCursor=function(){function e(t){this.replace(t)}return e.parse=function(e){return!e||"object"!=typeof e&&"string"!=typeof e?e:new t.UploadCursor(e)},e.prototype.tag=null,e.prototype.offset=null,e.prototype.expiresAt=null,e.prototype.json=function(){return this._json||(this._json={upload_id:this.tag,offset:this.offset,expires:""+this.expiresAt})},e.prototype.replace=function(t){return"object"==typeof t?(this.tag=t.upload_id||null,this.offset=t.offset||0,this.expiresAt=new Date(Date.parse(t.expires)||Date.now()),this._json=t):(this.tag=t||null,this.offset=0,this.expiresAt=new Date(1e3*Math.floor(Date.now()/1e3)),this._json=null),this},e}(),t.UserInfo=function(){function e(t){var e;this._json=t,this.name=t.display_name,this.email=t.email,this.countryCode=t.country||null,this.uid=""+t.uid,t.public_app_url?(this.publicAppUrl=t.public_app_url,e=this.publicAppUrl.length-1,e>=0&&"/"===this.publicAppUrl.substring(e)&&(this.publicAppUrl=this.publicAppUrl.substring(0,e))):this.publicAppUrl=null,this.referralUrl=t.referral_link,this.quota=t.quota_info.quota,this.privateBytes=t.quota_info.normal||0,this.sharedBytes=t.quota_info.shared||0,this.usedQuota=this.privateBytes+this.sharedBytes}return e.parse=function(e){return e&&"object"==typeof e?new t.UserInfo(e):e},e.prototype.name=null,e.prototype.email=null,e.prototype.countryCode=null,e.prototype.uid=null,e.prototype.referralUrl=null,e.prototype.publicAppUrl=null,e.prototype.quota=null,e.prototype.usedQuota=null,e.prototype.privateBytes=null,e.prototype.sharedBytes=null,e.prototype.json=function(){return this._json},e}(),"undefined"==typeof XMLHttpRequest||"undefined"==typeof window&&"undefined"==typeof self||"undefined"==typeof navigator||"string"!=typeof navigator.userAgent?(h=require("xhr2"),a=!1,i=!1,s=!1):("undefined"==typeof XDomainRequest||"withCredentials"in new XMLHttpRequest?(h=XMLHttpRequest,a=!1,i="undefined"!=typeof FormData&&-1===navigator.userAgent.indexOf("Firefox")):(h=XDomainRequest,a=!0,i=!1),s=!0),"undefined"==typeof Uint8Array)o=null,l=!1,u=!1;else if(Object.getPrototypeOf?o=Object.getPrototypeOf(Object.getPrototypeOf(new Uint8Array(0))).constructor:Object.__proto__&&(o=new Uint8Array(0).__proto__.__proto__.constructor),"undefined"==typeof Blob)l=!1,u=!0;else{try{2===new Blob([new Uint8Array(2)]).size?(l=!0,u=!0):(u=!1,l=2===new Blob([new ArrayBuffer(2)]).size)}catch(X){g=X,u=!1,l=!1,"undefined"!=typeof WebKitBlobBuilder&&-1!==navigator.userAgent.indexOf("Android")&&(i=!1)}o===Object&&(u=!1)}if(t.Xhr=function(){function e(t,e){this.method=t,this.isGet="GET"===this.method,this.url=e,this.wantHeaders=!1,this.headers={},this.params=null,this.body=null,this.preflight=!(this.isGet||"POST"===this.method),this.signed=!1,this.completed=!1,this.responseType=null,this.callback=null,this.xhr=null,this.onError=null}return e.Request=h,e.ieXdr=a,e.canSendForms=i,e.doesPreflight=s,e.ArrayBufferView=o,e.sendArrayBufferView=u,e.wrapBlob=l,e.prototype.xhr=null,e.prototype.onError=null,e.prototype.setParams=function(t){if(this.signed)throw Error("setParams called after addOauthParams or addOauthHeader");if(this.params)throw Error("setParams cannot be called twice");return this.params=t,this},e.prototype.setCallback=function(t){return this.callback=t,this},e.prototype.signWithOauth=function(e,r){return t.Xhr.ieXdr?this.addOauthParams(e):this.preflight||!t.Xhr.doesPreflight?this.addOauthHeader(e):this.isGet&&r?this.addOauthHeader(e):this.addOauthParams(e)},e.prototype.addOauthParams=function(t){if(this.signed)throw Error("Request already has an OAuth signature");return this.params||(this.params={}),t.addAuthParams(this.method,this.url,this.params),this.signed=!0,this},e.prototype.addOauthHeader=function(t){if(this.signed)throw Error("Request already has an OAuth signature");return this.params||(this.params={}),this.signed=!0,this.setHeader("Authorization",t.authHeader(this.method,this.url,this.params))},e.prototype.setBody=function(t){if(this.isGet)throw Error("setBody cannot be called on GET requests");if(null!==this.body)throw Error("Request already has a body");return"string"==typeof t||"undefined"!=typeof FormData&&t instanceof FormData||(this.headers["Content-Type"]="application/octet-stream",this.preflight=!0),this.body=t,this},e.prototype.setResponseType=function(t){return this.responseType=t,this},e.prototype.setHeader=function(t,e){var r;if(this.headers[t])throw r=this.headers[t],Error("HTTP header "+t+" already set to "+r);if("Content-Type"===t)throw Error("Content-Type is automatically computed based on setBody");return this.preflight=!0,this.headers[t]=e,this},e.prototype.reportResponseHeaders=function(){return this.wantHeaders=!0},e.prototype.setFileField=function(e,r,n,o){var i,s,a,h;if(null!==this.body)throw Error("Request already has a body");if(this.isGet)throw Error("setFileField cannot be called on GET requests");if("object"==typeof n){"undefined"!=typeof ArrayBuffer&&(n instanceof ArrayBuffer?t.Xhr.sendArrayBufferView&&(n=new Uint8Array(n)):!t.Xhr.sendArrayBufferView&&0===n.byteOffset&&n.buffer instanceof ArrayBuffer&&(n=n.buffer)),o||(o="application/octet-stream");try{n=new Blob([n],{type:o})}catch(u){g=u,window.WebKitBlobBuilder&&(a=new WebKitBlobBuilder,a.append(n),(i=a.getBlob(o))&&(n=i))}"undefined"!=typeof File&&n instanceof File&&(n=new Blob([n],{type:n.type})),h=n instanceof Blob}else h=!1;return h?(this.body=new FormData,this.body.append(e,n,r)):(o||(o="application/octet-stream"),s=this.multipartBoundary(),this.headers["Content-Type"]="multipart/form-data; boundary="+s,this.body=["--",s,"\r\n",'Content-Disposition: form-data; name="',e,'"; filename="',r,'"\r\n',"Content-Type: ",o,"\r\n","Content-Transfer-Encoding: binary\r\n\r\n",n,"\r\n","--",s,"--","\r\n"].join(""))},e.prototype.multipartBoundary=function(){return[Date.now().toString(36),Math.random().toString(36)].join("----")},e.prototype.paramsToUrl=function(){var e;return this.params&&(e=t.Xhr.urlEncode(this.params),0!==e.length&&(this.url=[this.url,"?",e].join("")),this.params=null),this},e.prototype.paramsToBody=function(){if(this.params){if(null!==this.body)throw Error("Request already has a body");if(this.isGet)throw Error("paramsToBody cannot be called on GET requests");this.headers["Content-Type"]="application/x-www-form-urlencoded",this.body=t.Xhr.urlEncode(this.params),this.params=null}return this},e.prototype.prepare=function(){var e,r,n,o,i=this;if(r=t.Xhr.ieXdr,this.isGet||null!==this.body||r?(this.paramsToUrl(),null!==this.body&&"string"==typeof this.body&&(this.headers["Content-Type"]="text/plain; charset=utf8")):this.paramsToBody(),this.xhr=new t.Xhr.Request,r?(this.xhr.onload=function(){return i.onXdrLoad()},this.xhr.onerror=function(){return i.onXdrError()},this.xhr.ontimeout=function(){return i.onXdrError()},this.xhr.onprogress=function(){}):this.xhr.onreadystatechange=function(){return i.onReadyStateChange()},this.xhr.open(this.method,this.url,!0),!r){o=this.headers;for(e in o)D.call(o,e)&&(n=o[e],this.xhr.setRequestHeader(e,n))}return this.responseType&&("b"===this.responseType?this.xhr.overrideMimeType&&this.xhr.overrideMimeType("text/plain; charset=x-user-defined"):this.xhr.responseType=this.responseType),this},e.prototype.send=function(e){var r,n;if(this.callback=e||this.callback,null!==this.body){r=this.body,t.Xhr.sendArrayBufferView?r instanceof ArrayBuffer&&(r=new Uint8Array(r)):0===r.byteOffset&&r.buffer instanceof ArrayBuffer&&(r=r.buffer);try{this.xhr.send(r)}catch(o){if(n=o,t.Xhr.sendArrayBufferView||!t.Xhr.wrapBlob)throw n;r=new Blob([r],{type:"application/octet-stream"}),this.xhr.send(r)}}else this.xhr.send();return this},e.urlEncode=function(t){var e,r,n;e=[];for(r in t)n=t[r],e.push(this.urlEncodeValue(r)+"="+this.urlEncodeValue(n));return e.sort().join("&")},e.urlEncodeValue=function(t){return encodeURIComponent(""+t).replace(/\!/g,"%21").replace(/'/g,"%27").replace(/\(/g,"%28").replace(/\)/g,"%29").replace(/\*/g,"%2A")},e.urlDecode=function(t){var e,r,n,o,i,s;for(r={},s=t.split("&"),o=0,i=s.length;i>o;o++)n=s[o],e=n.split("="),r[decodeURIComponent(e[0])]=decodeURIComponent(e[1]);return r},e.prototype.onReadyStateChange=function(){var e,r,n,o,i,s,a,h,u,l,p,c;if(4!==this.xhr.readyState)return!0;if(this.completed)return!0;if(this.completed=!0,200>this.xhr.status||this.xhr.status>=300)return r=new t.ApiError(this.xhr,this.method,this.url),this.onError?this.onError(r,this.callback):this.callback(r),!0;if(this.wantHeaders?(e=this.xhr.getAllResponseHeaders(),i=e?t.Xhr.parseResponseHeaders(e):this.guessResponseHeaders(),u=i["x-dropbox-metadata"]):(i=void 0,u=this.xhr.getResponseHeader("x-dropbox-metadata")),null!=u?u.length:void 0)try{h=JSON.parse(u)}catch(d){a=d,h=void 0}else h=void 0;if(this.responseType){if("b"===this.responseType){for(o=null!=this.xhr.responseText?this.xhr.responseText:this.xhr.response,n=[],s=p=0,c=o.length;c>=0?c>p:p>c;s=c>=0?++p:--p)n.push(String.fromCharCode(255&o.charCodeAt(s)));l=n.join(""),this.callback(null,l,h,i)}else this.callback(null,this.xhr.response,h,i);return!0}switch(l=null!=this.xhr.responseText?this.xhr.responseText:this.xhr.response,this.xhr.getResponseHeader("Content-Type")){case"application/x-www-form-urlencoded":this.callback(null,t.Xhr.urlDecode(l),h,i);break;case"application/json":case"text/javascript":this.callback(null,JSON.parse(l),h,i);break;default:this.callback(null,l,h,i)}return!0},e.parseResponseHeaders=function(t){var e,r,n,o,i,s,a,h;for(n={},r=t.split("\n"),a=0,h=r.length;h>a;a++)o=r[a],e=o.indexOf(":"),i=o.substring(0,e).trim().toLowerCase(),s=o.substring(e+1).trim(),n[i]=s;return n},e.prototype.guessResponseHeaders=function(){var t,e,r,n,o,i;for(t={},i=["cache-control","content-language","content-range","content-type","expires","last-modified","pragma","x-dropbox-metadata"],n=0,o=i.length;o>n;n++)e=i[n],r=this.xhr.getResponseHeader(e),r&&(t[e]=r);return t},e.prototype.onXdrLoad=function(){var e,r,n;if(this.completed)return!0;if(this.completed=!0,n=this.xhr.responseText,e=this.wantHeaders?{"content-type":this.xhr.contentType}:void 0,r=void 0,this.responseType)return this.callback(null,n,r,e),!0;switch(this.xhr.contentType){case"application/x-www-form-urlencoded":this.callback(null,t.Xhr.urlDecode(n),r,e);break;case"application/json":case"text/javascript":this.callback(null,JSON.parse(n),r,e);break;default:this.callback(null,n,r,e)}return!0},e.prototype.onXdrError=function(){var e;return this.completed?!0:(this.completed=!0,e=new t.ApiError(this.xhr,this.method,this.url),this.onError?this.onError(e,this.callback):this.callback(e),!0)},e}(),"undefined"!=typeof module&&"exports"in module)module.exports=t;else if("undefined"!=typeof window&&null!==window)if(window.Dropbox)for(R in t)D.call(t,R)&&(k=t[R],window.Dropbox[R]=k);else window.Dropbox=t;else{if("undefined"==typeof self||null===self)throw Error("This library only supports node.js and modern browsers.");self.Dropbox=t}}).call(this);
-/*
-//@ sourceMappingURL=dropbox.min.map
-*/
\ No newline at end of file
diff --git a/js/file-manager.js b/js/file-manager.js
index 05c7faad..3cca4d6e 100644
--- a/js/file-manager.js
+++ b/js/file-manager.js
@@ -1,11 +1,12 @@
-define(["jquery", "core", "gdrive", "dropbox", "synchronizer", "async-runner"],
-	function($, core, gdrive, dropbox, synchronizer, asyncTaskRunner) {
+define(["jquery", "core", "google-helper", "dropbox-helper", "synchronizer", "publisher", "async-runner"],
+	function($, core, googleHelper, dropboxHelper, synchronizer, publisher, asyncTaskRunner) {
 
 	var fileManager = {};
 
 	fileManager.init = function() {
-		gdrive.init(fileManager);
-		dropbox.init(fileManager);
+		googleHelper.init(fileManager);
+		dropboxHelper.init(fileManager);
+		publisher.init(fileManager);
 		
 		var changeSyncButtonState = function() {
 			if(synchronizer.isRunning() || synchronizer.isQueueEmpty() || core.isOffline) {
@@ -83,21 +84,21 @@ define(["jquery", "core", "gdrive", "dropbox", "synchronizer", "async-runner"],
 		$(".action-upload-gdrive-select").click(function() {
 			// This action is not available because picker does not support
 			// folder selection yet
-			gdrive.picker(function(ids) {
+			googleHelper.picker(function(ids) {
 				if(ids !== undefined && ids.length !== 0) {
-					uploadGdrive(ids[0]);
+					uploadGdrive(undefined, ids[0]);
 				}
 			}, true);
 		});
 		$(".action-download-gdrive").click(function() {
-			gdrive.picker(importGdrive);
+			googleHelper.picker(importGdrive);
 		});
 		$(".action-manual-gdrive").click(function(event) {
 			var fileId = core.getInputValue($("#manual-gdrive-fileid"), event);
 			manualGdrive(fileId);
 		});
 		$(".action-download-dropbox").click(function() {
-			dropbox.picker(importDropbox);
+			dropboxHelper.picker(importDropbox);
 		});
 		$(".action-upload-dropbox").click(function(event) {
 			var path = core.getInputValue($("#upload-dropbox-path"), event);
@@ -112,12 +113,6 @@ define(["jquery", "core", "gdrive", "dropbox", "synchronizer", "async-runner"],
 	// Caution: this function recreate the editor (reset undo operations)
 	var fileDescList = [];
 	fileManager.selectFile = function(fileIndex) {
-		// If file system does not exist
-		if (!localStorage["file.counter"] || !localStorage["file.list"]) {
-			localStorage.clear();
-			localStorage["file.counter"] = 0;
-			localStorage["file.list"] = ";";
-		}
 		// If no file create one
 		if (localStorage["file.list"].length === 1) {
 			fileIndex = this.createFile();
@@ -169,6 +164,7 @@ define(["jquery", "core", "gdrive", "dropbox", "synchronizer", "async-runner"],
 			sync += syncIndexes[i] + ";";
 		}
 		localStorage[fileIndex + ".sync"] = sync;
+		localStorage[fileIndex + ".publish"] = ";";
 		localStorage["file.counter"] = fileCounter + 1;
 		localStorage["file.list"] += fileIndex + ";";
 		return fileIndex;
@@ -282,10 +278,11 @@ define(["jquery", "core", "gdrive", "dropbox", "synchronizer", "async-runner"],
 				refreshManageSync();
 			}
 		}
-		// Remove Google Drive etag
+		// Remove ETAG, version, CRCs (if any) 
 		localStorage.removeItem(fileSyncIndex + ".etag");
-		// Remove Dropbox version
 		localStorage.removeItem(fileSyncIndex + ".version");
+		localStorage.removeItem(fileSyncIndex + ".contentCRC");
+		localStorage.removeItem(fileSyncIndex + ".titleCRC");
 	};
 	
 	// Look for local file associated to a synchronized location 
@@ -303,14 +300,18 @@ define(["jquery", "core", "gdrive", "dropbox", "synchronizer", "async-runner"],
 		return fileIndex;
 	};
 
-	function uploadGdrive(folderId) {
+	function uploadGdrive(fileId, folderId) {
 		var fileIndex = localStorage["file.current"];
 		var content = localStorage[fileIndex + ".content"];
 		var title = localStorage[fileIndex + ".title"];
-		gdrive.upload(undefined, folderId, title, content, function(fileSyncIndex) {
+		googleHelper.upload(fileId, folderId, title, content, function(fileSyncIndex) {
 			if (fileSyncIndex === undefined) {
 				return;
 			}
+			var contentCRC = core.crc32(content);
+			localStorage[fileSyncIndex + ".contentCRC"] = contentCRC;
+			var titleCRC = core.crc32(title);
+			localStorage[fileSyncIndex + ".titleCRC"] = titleCRC;
 			localStorage[fileIndex + ".sync"] += fileSyncIndex + ";";
 			refreshManageSync();
 			fileManager.updateFileTitles();
@@ -319,6 +320,21 @@ define(["jquery", "core", "gdrive", "dropbox", "synchronizer", "async-runner"],
 		});
 	}
 	
+	function manualGdrive(fileId) {
+		if(!fileId) {
+			return;
+		}
+		// Check that file is not synchronized with an other one
+		var fileSyncIndex = SYNC_PROVIDER_GDRIVE + fileId;
+		var fileIndex = fileManager.getFileIndexFromSync(fileSyncIndex);
+		if(fileIndex !== undefined) {
+			var title = localStorage[fileIndex + ".title"];
+			core.showError('File ID is already synchronized with "' + title + '"');
+			return;
+		}
+		uploadGdrive(fileId);
+	}
+	
 	function importGdrive(ids) {
 		if(ids === undefined) {
 			return;
@@ -335,44 +351,14 @@ define(["jquery", "core", "gdrive", "dropbox", "synchronizer", "async-runner"],
 			}
 			importIds.push(fileId);
 		}
-		gdrive.importFiles(importIds);
-	}
-	
-	function manualGdrive(fileId) {
-		if(!fileId) {
-			return;
-		}
-		// Check that file is not synchronized with an other one
-		var fileSyncIndex = SYNC_PROVIDER_GDRIVE + fileId;
-		var fileIndex = fileManager.getFileIndexFromSync(fileSyncIndex);
-		if(fileIndex !== undefined) {
-			var title = localStorage[fileIndex + ".title"];
-			core.showError('File ID is already synchronized with "' + title + '"');
-			return;
-		}
-		var fileIndex = localStorage["file.current"];
-		var title = localStorage[fileIndex + ".title"];
-		gdrive.downloadMetadata([fileId], function(result) {
-			if(result === undefined || result.length === 0) {
-				return;
-			}
-			localStorage[fileSyncIndex + ".etag"] = result[0].etag;
-			localStorage[fileIndex + ".sync"] += fileSyncIndex + ";";
-			refreshManageSync();
-			fileManager.updateFileTitles();
-			core.showMessage('"' + title
-				+ '" will now be synchronized on Google Drive.');
-			// Force synchronization
-			synchronizer.addFileForUpload(fileIndex);
-			synchronizer.forceSync();
-		});
+		googleHelper.importFiles(importIds);
 	}
 	
 	function manualDropbox(path) {
 		if(!path) {
 			return;
 		}
-		path = dropbox.checkPath(path);
+		path = dropboxHelper.checkPath(path);
 		if(path === undefined) {
 			return;
 		}
@@ -387,10 +373,12 @@ define(["jquery", "core", "gdrive", "dropbox", "synchronizer", "async-runner"],
 		var fileIndex = localStorage["file.current"];
 		var content = localStorage[fileIndex + ".content"];
 		var title = localStorage[fileIndex + ".title"];
-		dropbox.upload(path, content, function(fileSyncIndex) {
+		dropboxHelper.upload(path, content, function(fileSyncIndex) {
 			if (fileSyncIndex === undefined) {
 				return;
 			}
+			var contentCRC = core.crc32(content);
+			localStorage[fileSyncIndex + ".contentCRC"] = contentCRC;
 			localStorage[fileIndex + ".sync"] += fileSyncIndex + ";";
 			refreshManageSync();
 			fileManager.updateFileTitles();
@@ -415,7 +403,7 @@ define(["jquery", "core", "gdrive", "dropbox", "synchronizer", "async-runner"],
 			}
 			importPaths.push(filePath);
 		}
-		dropbox.importFiles(importPaths);
+		dropboxHelper.importFiles(importPaths);
 	}
 	
 	function refreshManageSync() {
diff --git a/js/github.js b/js/github.js
new file mode 100644
index 00000000..bd0647d3
--- /dev/null
+++ b/js/github.js
@@ -0,0 +1,10 @@
+define(["jquery", "core", "async-runner", "underscore-min"], function($, core, asyncTaskRunner) {
+	
+	var client = undefined;
+	var authenticated = false;
+
+	var github = {};
+	
+	
+	
+});
\ No newline at end of file
diff --git a/js/gdrive.js b/js/google-helper.js
similarity index 87%
rename from js/gdrive.js
rename to js/google-helper.js
index 5c43d602..6960ec60 100644
--- a/js/gdrive.js
+++ b/js/google-helper.js
@@ -6,7 +6,7 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 	var connected = false;
 	var authenticated = false;
 
-	var gdrive = {};
+	var googleHelper = {};
 
 	// Try to connect Gdrive by downloading client.js
 	function connect(callback) {
@@ -97,7 +97,7 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 		});
 	}
 
-	gdrive.upload = function(fileId, parentId, title, content, callback) {
+	googleHelper.upload = function(fileId, parentId, title, content, callback) {
 		callback = callback || core.doNothing;
 		authenticate(function() {
 			if (connected === false) {
@@ -151,17 +151,10 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 						return;
 					}
 					var error = response.error;
-					// If it's an update and file has been removed from Google Drive
-					if(error !== undefined && fileId !== undefined && error.code === 404) {
-						core.showMessage('"' + title + '" has been removed from Google Drive.');
-						fileManager.removeSync(SYNC_PROVIDER_GDRIVE + fileId);
-						fileManager.updateFileTitles();
-						// We assume it's not error
-						fileSyncIndex = null;
-						asyncTask.success();
-						return;
-					}
 					// Handle error
+					if(error !== undefined && fileId !== undefined && error.code === 404) {
+						error = 'File ID "' + fileId + '" does not exist on Google Drive.';
+					}
 					handleError(error, asyncTask, callback);
 				});
 			};
@@ -172,7 +165,7 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 		});
 	};
 
-	gdrive.checkUpdates = function(lastChangeId, callback) {
+	googleHelper.checkUpdates = function(lastChangeId, callback) {
 		callback = callback || core.doNothing;
 		authenticate(function() {
 			if (connected === false) {
@@ -226,7 +219,7 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 		});
 	};
 
-	gdrive.downloadMetadata = function(ids, callback, result) {
+	googleHelper.downloadMetadata = function(ids, callback, result) {
 		callback = callback || core.doNothing;
 		result = result || [];
 		if(ids.length === 0) {
@@ -268,13 +261,13 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 				});
 			};
 			asyncTask.onSuccess = function() {
-				gdrive.downloadMetadata(ids, callback, result);
+				googleHelper.downloadMetadata(ids, callback, result);
 			};
 			asyncTaskRunner.addTask(asyncTask);
 		});
 	};
 
-	gdrive.downloadContent = function(objects, callback, result) {
+	googleHelper.downloadContent = function(objects, callback, result) {
 		callback = callback || core.doNothing;
 		result = result || [];
 		if(objects.length === 0) {
@@ -328,7 +321,7 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 				});
 			};
 			asyncTask.onSuccess = function() {
-				gdrive.downloadContent(objects, callback, result);
+				googleHelper.downloadContent(objects, callback, result);
 			};
 			asyncTaskRunner.addTask(asyncTask);
 		});
@@ -404,7 +397,7 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 		});
 	}
 	
-	gdrive.picker = function(callback) {
+	googleHelper.picker = function(callback) {
 		callback = callback || core.doNothing;
 		loadPicker(function() {
 			if (pickerLoaded === false) {
@@ -446,12 +439,12 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 		});
 	};
 
-	gdrive.importFiles = function(ids) {
-		gdrive.downloadMetadata(ids, function(result) {
+	googleHelper.importFiles = function(ids) {
+		googleHelper.downloadMetadata(ids, function(result) {
 			if(result === undefined) {
 				return;
 			}
-			gdrive.downloadContent(result, function(result) {
+			googleHelper.downloadContent(result, function(result) {
 				if(result === undefined) {
 					return;
 				}
@@ -459,6 +452,10 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 					var file = result[i];
 					fileSyncIndex = SYNC_PROVIDER_GDRIVE + file.id;
 					localStorage[fileSyncIndex + ".etag"] = file.etag;
+					var contentCRC = core.crc32(file.content);
+					localStorage[fileSyncIndex + ".contentCRC"] = contentCRC;
+					var titleCRC = core.crc32(file.title);
+					localStorage[fileSyncIndex + ".titleCRC"] = titleCRC;
 					var fileIndex = fileManager.createFile(file.title, file.content, [fileSyncIndex]);
 					fileManager.selectFile(fileIndex);
 					core.showMessage('"' + file.title + '" imported successfully from Google Drive.');
@@ -467,7 +464,7 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 		});
 	};
 
-	gdrive.init = function(fileManagerModule) {
+	googleHelper.init = function(fileManagerModule) {
 		fileManager = fileManagerModule;
 		var state = localStorage["sync.gdrive.state"];
 		if(state === undefined) {
@@ -476,11 +473,15 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 		localStorage.removeItem("sync.gdrive.state");
 		state = JSON.parse(state);
 		if (state.action == "create") {
-			gdrive.upload(undefined, state.folderId, GDRIVE_DEFAULT_FILE_TITLE,
+			googleHelper.upload(undefined, state.folderId, GDRIVE_DEFAULT_FILE_TITLE,
 				"", function(fileSyncIndex) {
 				if(fileSyncIndex === undefined) {
 					return;
 				}
+				var contentCRC = core.crc32("");
+				localStorage[fileSyncIndex + ".contentCRC"] = contentCRC;
+				var titleCRC = core.crc32(GDRIVE_DEFAULT_FILE_TITLE);
+				localStorage[fileSyncIndex + ".titleCRC"] = titleCRC;
 				var fileIndex = fileManager.createFile(GDRIVE_DEFAULT_FILE_TITLE, "", [fileSyncIndex]);
 				fileManager.selectFile(fileIndex);
 				core.showMessage('"' + GDRIVE_DEFAULT_FILE_TITLE + '" created successfully on Google Drive.');
@@ -498,9 +499,9 @@ define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
 					ids.push(id);
 				}
 			}
-			gdrive.importFiles(ids);
+			googleHelper.importFiles(ids);
 		}
 	};
 	
-	return gdrive;
+	return googleHelper;
 });
diff --git a/js/publisher.js b/js/publisher.js
new file mode 100644
index 00000000..2249e4dc
--- /dev/null
+++ b/js/publisher.js
@@ -0,0 +1,37 @@
+define(["jquery", "core", "async-runner"], function($, core, asyncTaskRunner) {
+	
+	// Dependencies
+	var fileManager = undefined;
+
+	var publisher = {};
+	
+	var wizardProvider = undefined;
+	
+	function initWizard(provider) {
+		wizardProvider = provider;
+		$("input:radio[name=radio-publish-existing][value=new]").prop("checked", true);
+		$("input:radio[name=radio-publish-format][value=markdown]").prop("checked", true);
+	}
+	
+	publisher.init = function(fileManagerModule) {
+		fileManager = fileManagerModule;
+		$("#action-publish-github").click(function() {
+			initWizard("github");
+		});
+		$("#action-publish-blogger").click(function() {
+			initWizard("blogger");
+		});
+		$("#action-publish-wordpress").click(function() {
+			initWizard("wordpress");
+		});
+		$("#action-publish-tumblr").click(function() {
+			initWizard("tumblr");
+		});
+	};
+	
+	publisher.initWizard = function() {
+		
+	};
+	
+	return publisher;
+});
\ No newline at end of file
diff --git a/js/synchronizer.js b/js/synchronizer.js
index 2e2b49e5..7538fd39 100644
--- a/js/synchronizer.js
+++ b/js/synchronizer.js
@@ -1,4 +1,4 @@
-define(["jquery", "core", "gdrive", "dropbox"], function($, core, gdrive, dropbox) {
+define(["jquery", "core", "google-helper", "dropbox-helper"], function($, core, googleHelper, dropboxHelper) {
 	var synchronizer = {};
 	
 	// Dependencies
@@ -49,7 +49,7 @@ define(["jquery", "core", "gdrive", "dropbox"], function($, core, gdrive, dropbo
 	};
 
 	// Recursive function to upload a single file on multiple locations
-	function fileUp(fileSyncIndexList, content, title, callback) {
+	function fileUp(fileSyncIndexList, content, contentCRC, title, titleCRC, callback) {
 		if (fileSyncIndexList.length === 0) {
 			localStorage.removeItem("sync.current");
 			// run the next file synchronization
@@ -58,12 +58,22 @@ define(["jquery", "core", "gdrive", "dropbox"], function($, core, gdrive, dropbo
 		}
 		var fileSyncIndex = fileSyncIndexList.pop();
 
+		// Skip if CRC has not changed
+		var syncContentCRC = localStorage[fileSyncIndex + ".contentCRC"];
+		var syncTitleCRC = localStorage[fileSyncIndex + ".titleCRC"];
+		if(contentCRC == syncContentCRC && (syncTitleCRC === undefined || titleCRC == syncTitleCRC)) {
+			fileUp(fileSyncIndexList, content, contentCRC, title, titleCRC, callback);
+			return;
+		}
+
 		// Try to find the provider
 		if (fileSyncIndex.indexOf(SYNC_PROVIDER_GDRIVE) === 0) {
 			var id = fileSyncIndex.substring(SYNC_PROVIDER_GDRIVE.length);
-			gdrive.upload(id, undefined, title, content, function(result) {
+			googleHelper.upload(id, undefined, title, content, function(result) {
 				if (result !== undefined) {
-					fileUp(fileSyncIndexList, content, title, callback);
+					localStorage[fileSyncIndex + ".contentCRC"] = contentCRC;
+					localStorage[fileSyncIndex + ".titleCRC"] = titleCRC;
+					fileUp(fileSyncIndexList, content, contentCRC, title, titleCRC, callback);
 					return;
 				}
 				// If error we put the fileIndex back in the queue
@@ -75,9 +85,10 @@ define(["jquery", "core", "gdrive", "dropbox"], function($, core, gdrive, dropbo
 		} else if (fileSyncIndex.indexOf(SYNC_PROVIDER_DROPBOX) === 0) {
 			var path = fileSyncIndex.substring(SYNC_PROVIDER_DROPBOX.length);
 			path = decodeURIComponent(path);
-			dropbox.upload(path, content, function(result) {
+			dropboxHelper.upload(path, content, function(result) {
 				if (result !== undefined) {
-					fileUp(fileSyncIndexList, content, title, callback);
+					localStorage[fileSyncIndex + ".contentCRC"] = contentCRC;
+					fileUp(fileSyncIndexList, content, contentCRC, title, titleCRC, callback);
 					return;
 				}
 				// If error we put the fileIndex back in the queue
@@ -87,7 +98,7 @@ define(["jquery", "core", "gdrive", "dropbox"], function($, core, gdrive, dropbo
 				return;
 			});
 		} else {
-			fileUp(fileSyncIndexList, content, title, callback);
+			fileUp(fileSyncIndexList, content, contentCRC, title, titleCRC, callback);
 		}
 	}
 
@@ -108,10 +119,12 @@ define(["jquery", "core", "gdrive", "dropbox"], function($, core, gdrive, dropbo
 
 		var content = localStorage[fileIndex + ".content"];
 		var title = localStorage[fileIndex + ".title"];
+		var contentCRC = core.crc32(content);
+		var titleCRC = core.crc32(title);
 
 		// Parse the list of synchronized locations associated to the file
 		var fileSyncIndexList = localStorage[fileIndex + ".sync"].split(";");
-		fileUp(fileSyncIndexList, content, title, callback);
+		fileUp(fileSyncIndexList, content, contentCRC, title, titleCRC, callback);
 	};
 
 	function syncDownGdrive(callback) {
@@ -121,12 +134,12 @@ define(["jquery", "core", "gdrive", "dropbox"], function($, core, gdrive, dropbo
 		}
 		var lastChangeId = parseInt(localStorage[SYNC_PROVIDER_GDRIVE
 			+ "lastChangeId"]);
-		gdrive.checkUpdates(lastChangeId, function(changes, newChangeId) {
+		googleHelper.checkUpdates(lastChangeId, function(changes, newChangeId) {
 			if (changes === undefined) {
 				callback();
 				return;
 			}
-			gdrive.downloadContent(changes, function(changes) {
+			googleHelper.downloadContent(changes, function(changes) {
 				if (changes === undefined) {
 					callback();
 					return;
@@ -175,9 +188,14 @@ define(["jquery", "core", "gdrive", "dropbox"], function($, core, gdrive, dropbo
 							fileManager.selectFile(); // Refresh editor
 						}
 					}
-					// Update file etag
+					// Update file etag and CRCs
 					localStorage[fileSyncIndex + ".etag"] = file.etag;
-					// Synchronize file to others locations
+					var contentCRC = core.crc32(file.content);
+					localStorage[fileSyncIndex + ".contentCRC"] = contentCRC;
+					var titleCRC = core.crc32(file.title);
+					localStorage[fileSyncIndex + ".titleCRC"] = titleCRC;
+
+					// Synchronize file with others locations
 					synchronizer.addFileForUpload(fileIndex);
 				}
 				if(updateFileTitles) {
@@ -196,12 +214,12 @@ define(["jquery", "core", "gdrive", "dropbox"], function($, core, gdrive, dropbo
 			return;
 		}
 		var lastChangeId = localStorage[SYNC_PROVIDER_DROPBOX + "lastChangeId"];
-		dropbox.checkUpdates(lastChangeId, function(changes, newChangeId) {
+		dropboxHelper.checkUpdates(lastChangeId, function(changes, newChangeId) {
 			if (changes === undefined) {
 				callback();
 				return;
 			}
-			dropbox.downloadContent(changes, function(changes) {
+			dropboxHelper.downloadContent(changes, function(changes) {
 				if (changes === undefined) {
 					callback();
 					return;
@@ -243,9 +261,12 @@ define(["jquery", "core", "gdrive", "dropbox"], function($, core, gdrive, dropbo
 							fileManager.selectFile(); // Refresh editor
 						}
 					}
-					// Update file version
+					// Update file version and CRC
 					localStorage[fileSyncIndex + ".version"] = file.versionTag;
-					// Synchronize file to others locations
+					var contentCRC = core.crc32(file.content);
+					localStorage[fileSyncIndex + ".contentCRC"] = contentCRC;
+					
+					// Synchronize file with others locations
 					synchronizer.addFileForUpload(fileIndex);
 				}
 				if(updateFileTitles) {
diff --git a/js/underscore-min.js b/js/underscore-min.js
new file mode 100644
index 00000000..2c370e5f
--- /dev/null
+++ b/js/underscore-min.js
@@ -0,0 +1,5 @@
+//     Underscore.js 1.4.2
+//     http://underscorejs.org
+//     (c) 2009-2012 Jeremy Ashkenas, DocumentCloud Inc.
+//     Underscore may be freely distributed under the MIT license.
+(function(){var e=this,t=e._,n={},r=Array.prototype,i=Object.prototype,s=Function.prototype,o=r.push,u=r.slice,a=r.concat,f=r.unshift,l=i.toString,c=i.hasOwnProperty,h=r.forEach,p=r.map,d=r.reduce,v=r.reduceRight,m=r.filter,g=r.every,y=r.some,b=r.indexOf,w=r.lastIndexOf,E=Array.isArray,S=Object.keys,x=s.bind,T=function(e){if(e instanceof T)return e;if(!(this instanceof T))return new T(e);this._wrapped=e};typeof exports!="undefined"?(typeof module!="undefined"&&module.exports&&(exports=module.exports=T),exports._=T):e._=T,T.VERSION="1.4.2";var N=T.each=T.forEach=function(e,t,r){if(e==null)return;if(h&&e.forEach===h)e.forEach(t,r);else if(e.length===+e.length){for(var i=0,s=e.length;i<s;i++)if(t.call(r,e[i],i,e)===n)return}else for(var o in e)if(T.has(e,o)&&t.call(r,e[o],o,e)===n)return};T.map=T.collect=function(e,t,n){var r=[];return e==null?r:p&&e.map===p?e.map(t,n):(N(e,function(e,i,s){r[r.length]=t.call(n,e,i,s)}),r)},T.reduce=T.foldl=T.inject=function(e,t,n,r){var 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diff --git a/lib/dropbox.js b/lib/dropbox.js
new file mode 100644
index 00000000..4453b2a5
--- /dev/null
+++ b/lib/dropbox.js
@@ -0,0 +1,3399 @@
+// Generated by CoffeeScript 1.6.2
+(function() {
+  var Dropbox, DropboxChromeOnMessage, DropboxChromeSendMessage, DropboxClient, DropboxXhrArrayBufferView, DropboxXhrCanSendForms, DropboxXhrDoesPreflight, DropboxXhrIeMode, DropboxXhrRequest, DropboxXhrSendArrayBufferView, DropboxXhrWrapBlob, add32, arrayToBase64, atob, atobNibble, base64Digits, base64HmacSha1, base64Sha1, blobError, btoa, btoaNibble, crypto, dropboxEncodeKey, hmacSha1, name, requireError, rotateLeft32, sha1, stringToArray, value, _base64Digits,
+    __indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; },
+    __hasProp = {}.hasOwnProperty,
+    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; };
+
+  Dropbox = function() {
+    return null;
+  };
+
+  Dropbox.Util = {};
+
+  Dropbox.EventSource = (function() {
+    function EventSource(options) {
+      this._cancelable = options && options.cancelable;
+      this._listeners = [];
+    }
+
+    EventSource.prototype.addListener = function(listener) {
+      if (typeof listener !== 'function') {
+        throw new TypeError('Invalid listener type; expected function');
+      }
+      if (__indexOf.call(this._listeners, listener) < 0) {
+        this._listeners.push(listener);
+      }
+      return this;
+    };
+
+    EventSource.prototype.removeListener = function(listener) {
+      var i, index, subscriber, _i, _len, _ref;
+
+      if (this._listeners.indexOf) {
+        index = this._listeners.indexOf(listener);
+        if (index !== -1) {
+          this._listeners.splice(index, 1);
+        }
+      } else {
+        _ref = this._listeners;
+        for (i = _i = 0, _len = _ref.length; _i < _len; i = ++_i) {
+          subscriber = _ref[i];
+          if (subscriber === listener) {
+            this._listeners.splice(i, 1);
+            break;
+          }
+        }
+      }
+      return this;
+    };
+
+    EventSource.prototype.dispatch = function(event) {
+      var listener, returnValue, _i, _len, _ref;
+
+      _ref = this._listeners;
+      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+        listener = _ref[_i];
+        returnValue = listener(event);
+        if (this._cancelable && returnValue === false) {
+          return false;
+        }
+      }
+      return true;
+    };
+
+    return EventSource;
+
+  })();
+
+  Dropbox.ApiError = (function() {
+    ApiError.prototype.status = void 0;
+
+    ApiError.prototype.method = void 0;
+
+    ApiError.prototype.url = void 0;
+
+    ApiError.prototype.responseText = void 0;
+
+    ApiError.prototype.response = void 0;
+
+    ApiError.NETWORK_ERROR = 0;
+
+    ApiError.INVALID_PARAM = 400;
+
+    ApiError.INVALID_TOKEN = 401;
+
+    ApiError.OAUTH_ERROR = 403;
+
+    ApiError.NOT_FOUND = 404;
+
+    ApiError.INVALID_METHOD = 405;
+
+    ApiError.RATE_LIMITED = 503;
+
+    ApiError.OVER_QUOTA = 507;
+
+    function ApiError(xhr, method, url) {
+      var text, xhrError;
+
+      this.method = method;
+      this.url = url;
+      this.status = xhr.status;
+      if (xhr.responseType) {
+        try {
+          text = xhr.response || xhr.responseText;
+        } catch (_error) {
+          xhrError = _error;
+          try {
+            text = xhr.responseText;
+          } catch (_error) {
+            xhrError = _error;
+            text = null;
+          }
+        }
+      } else {
+        try {
+          text = xhr.responseText;
+        } catch (_error) {
+          xhrError = _error;
+          text = null;
+        }
+      }
+      if (text) {
+        try {
+          this.responseText = text.toString();
+          this.response = JSON.parse(text);
+        } catch (_error) {
+          xhrError = _error;
+          this.response = null;
+        }
+      } else {
+        this.responseText = '(no response)';
+        this.response = null;
+      }
+    }
+
+    ApiError.prototype.toString = function() {
+      return "Dropbox API error " + this.status + " from " + this.method + " " + this.url + " :: " + this.responseText;
+    };
+
+    ApiError.prototype.inspect = function() {
+      return this.toString();
+    };
+
+    return ApiError;
+
+  })();
+
+  Dropbox.AuthDriver = (function() {
+    function AuthDriver() {}
+
+    AuthDriver.prototype.url = function(token) {
+      return "https://some.url?dboauth_token=" + (Dropbox.Xhr.urlEncode(token));
+    };
+
+    AuthDriver.prototype.doAuthorize = function(authUrl, token, tokenSecret, callback) {
+      return callback('oauth-token');
+    };
+
+    AuthDriver.prototype.onAuthStateChange = function(client, callback) {
+      return callback();
+    };
+
+    return AuthDriver;
+
+  })();
+
+  Dropbox.Drivers = {};
+
+  if (typeof atob === 'function' && typeof btoa === 'function') {
+    atob = function(string) {
+      return window.atob(string);
+    };
+    btoa = function(base64) {
+      return window.btoa(base64);
+    };
+  } else if ((typeof window !== 'undefined' || typeof self !== 'undefined') && (typeof navigator !== 'undefined' && typeof navigator.userAgent === 'string')) {
+    base64Digits = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
+    btoaNibble = function(accumulator, bytes, result) {
+      var i, limit;
+
+      limit = 3 - bytes;
+      accumulator <<= limit * 8;
+      i = 3;
+      while (i >= limit) {
+        result.push(base64Digits.charAt((accumulator >> (i * 6)) & 0x3F));
+        i -= 1;
+      }
+      i = bytes;
+      while (i < 3) {
+        result.push('=');
+        i += 1;
+      }
+      return null;
+    };
+    atobNibble = function(accumulator, digits, result) {
+      var i, limit;
+
+      limit = 4 - digits;
+      accumulator <<= limit * 6;
+      i = 2;
+      while (i >= limit) {
+        result.push(String.fromCharCode((accumulator >> (8 * i)) & 0xFF));
+        i -= 1;
+      }
+      return null;
+    };
+    btoa = function(string) {
+      var accumulator, bytes, i, result, _i, _ref;
+
+      result = [];
+      accumulator = 0;
+      bytes = 0;
+      for (i = _i = 0, _ref = string.length; 0 <= _ref ? _i < _ref : _i > _ref; i = 0 <= _ref ? ++_i : --_i) {
+        accumulator = (accumulator << 8) | string.charCodeAt(i);
+        bytes += 1;
+        if (bytes === 3) {
+          btoaNibble(accumulator, bytes, result);
+          accumulator = bytes = 0;
+        }
+      }
+      if (bytes > 0) {
+        btoaNibble(accumulator, bytes, result);
+      }
+      return result.join('');
+    };
+    atob = function(base64) {
+      var accumulator, digit, digits, i, result, _i, _ref;
+
+      result = [];
+      accumulator = 0;
+      digits = 0;
+      for (i = _i = 0, _ref = base64.length; 0 <= _ref ? _i < _ref : _i > _ref; i = 0 <= _ref ? ++_i : --_i) {
+        digit = base64.charAt(i);
+        if (digit === '=') {
+          break;
+        }
+        accumulator = (accumulator << 6) | base64Digits.indexOf(digit);
+        digits += 1;
+        if (digits === 4) {
+          atobNibble(accumulator, digits, result);
+          accumulator = digits = 0;
+        }
+      }
+      if (digits > 0) {
+        atobNibble(accumulator, digits, result);
+      }
+      return result.join('');
+    };
+  } else {
+    atob = function(arg) {
+      var buffer, i;
+
+      buffer = new Buffer(arg, 'base64');
+      return ((function() {
+        var _i, _ref, _results;
+
+        _results = [];
+        for (i = _i = 0, _ref = buffer.length; 0 <= _ref ? _i < _ref : _i > _ref; i = 0 <= _ref ? ++_i : --_i) {
+          _results.push(String.fromCharCode(buffer[i]));
+        }
+        return _results;
+      })()).join('');
+    };
+    btoa = function(arg) {
+      var buffer, i;
+
+      buffer = new Buffer((function() {
+        var _i, _ref, _results;
+
+        _results = [];
+        for (i = _i = 0, _ref = arg.length; 0 <= _ref ? _i < _ref : _i > _ref; i = 0 <= _ref ? ++_i : --_i) {
+          _results.push(arg.charCodeAt(i));
+        }
+        return _results;
+      })());
+      return buffer.toString('base64');
+    };
+  }
+
+  Dropbox.Util.atob = atob;
+
+  Dropbox.Util.btoa = btoa;
+
+  Dropbox.Client = (function() {
+    function Client(options) {
+      var _this = this;
+
+      this.sandbox = options.sandbox || false;
+      this.apiServer = options.server || this.defaultApiServer();
+      this.authServer = options.authServer || this.defaultAuthServer();
+      this.fileServer = options.fileServer || this.defaultFileServer();
+      this.downloadServer = options.downloadServer || this.defaultDownloadServer();
+      this.onXhr = new Dropbox.EventSource({
+        cancelable: true
+      });
+      this.onError = new Dropbox.EventSource;
+      this.onAuthStateChange = new Dropbox.EventSource;
+      this.xhrOnErrorHandler = function(error, callback) {
+        return _this.handleXhrError(error, callback);
+      };
+      this.oauth = new Dropbox.Oauth(options);
+      this.driver = null;
+      this.filter = null;
+      this.uid = null;
+      this.authState = null;
+      this.authError = null;
+      this._credentials = null;
+      this.setCredentials(options);
+      this.setupUrls();
+    }
+
+    Client.prototype.authDriver = function(driver) {
+      this.driver = driver;
+      return this;
+    };
+
+    Client.prototype.onXhr = null;
+
+    Client.prototype.onError = null;
+
+    Client.prototype.onAuthStateChange = null;
+
+    Client.prototype.dropboxUid = function() {
+      return this.uid;
+    };
+
+    Client.prototype.credentials = function() {
+      if (!this._credentials) {
+        this.computeCredentials();
+      }
+      return this._credentials;
+    };
+
+    Client.prototype.authenticate = function(options, callback) {
+      var interactive, oldAuthState, _fsmStep,
+        _this = this;
+
+      if (!callback && typeof options === 'function') {
+        callback = options;
+        options = null;
+      }
+      if (options && 'interactive' in options) {
+        interactive = options.interactive;
+      } else {
+        interactive = true;
+      }
+      if (!(this.driver || this.authState === DropboxClient.DONE)) {
+        throw new Error('Call authDriver to set an authentication driver');
+      }
+      if (this.authState === DropboxClient.ERROR) {
+        throw new Error('Client got in an error state. Call reset() to reuse it!');
+      }
+      oldAuthState = null;
+      _fsmStep = function() {
+        var authUrl;
+
+        if (oldAuthState !== _this.authState) {
+          oldAuthState = _this.authState;
+          if (_this.driver && _this.driver.onAuthStateChange) {
+            _this.driver.onAuthStateChange(_this, _fsmStep);
+            return;
+          }
+        }
+        switch (_this.authState) {
+          case DropboxClient.RESET:
+            if (!interactive) {
+              if (callback) {
+                callback(null, _this);
+              }
+              return;
+            }
+            return _this.requestToken(function(error, data) {
+              var token, tokenSecret;
+
+              if (error) {
+                _this.authError = error;
+                _this.authState = DropboxClient.ERROR;
+              } else {
+                token = data.oauth_token;
+                tokenSecret = data.oauth_token_secret;
+                _this.oauth.setToken(token, tokenSecret);
+                _this.authState = DropboxClient.REQUEST;
+              }
+              _this._credentials = null;
+              _this.onAuthStateChange.dispatch(_this);
+              return _fsmStep();
+            });
+          case DropboxClient.REQUEST:
+            if (!interactive) {
+              if (callback) {
+                callback(null, _this);
+              }
+              return;
+            }
+            authUrl = _this.authorizeUrl(_this.oauth.token);
+            return _this.driver.doAuthorize(authUrl, _this.oauth.token, _this.oauth.tokenSecret, function() {
+              _this.authState = DropboxClient.AUTHORIZED;
+              _this._credentials = null;
+              _this.onAuthStateChange.dispatch(_this);
+              return _fsmStep();
+            });
+          case DropboxClient.AUTHORIZED:
+            return _this.getAccessToken(function(error, data) {
+              if (error) {
+                _this.authError = error;
+                _this.authState = DropboxClient.ERROR;
+              } else {
+                _this.oauth.setToken(data.oauth_token, data.oauth_token_secret);
+                _this.uid = data.uid;
+                _this.authState = DropboxClient.DONE;
+              }
+              _this._credentials = null;
+              _this.onAuthStateChange.dispatch(_this);
+              return _fsmStep();
+            });
+          case DropboxClient.DONE:
+            if (callback) {
+              callback(null, _this);
+            }
+            break;
+          case DropboxClient.SIGNED_OFF:
+            _this.authState = DropboxClient.RESET;
+            _this.reset();
+            return _fsmStep();
+          case DropboxClient.ERROR:
+            if (callback) {
+              callback(_this.authError, _this);
+            }
+        }
+      };
+      _fsmStep();
+      return this;
+    };
+
+    Client.prototype.isAuthenticated = function() {
+      return this.authState === DropboxClient.DONE;
+    };
+
+    Client.prototype.signOut = function(callback) {
+      var xhr,
+        _this = this;
+
+      xhr = new Dropbox.Xhr('POST', this.urls.signOut);
+      xhr.signWithOauth(this.oauth);
+      return this.dispatchXhr(xhr, function(error) {
+        if (error) {
+          if (callback) {
+            callback(error);
+          }
+          return;
+        }
+        _this.authState = DropboxClient.RESET;
+        _this.reset();
+        _this.authState = DropboxClient.SIGNED_OFF;
+        _this.onAuthStateChange.dispatch(_this);
+        if (_this.driver && _this.driver.onAuthStateChange) {
+          return _this.driver.onAuthStateChange(_this, function() {
+            if (callback) {
+              return callback(error);
+            }
+          });
+        } else {
+          if (callback) {
+            return callback(error);
+          }
+        }
+      });
+    };
+
+    Client.prototype.signOff = function(callback) {
+      return this.signOut(callback);
+    };
+
+    Client.prototype.getUserInfo = function(options, callback) {
+      var httpCache, xhr;
+
+      if ((!callback) && (typeof options === 'function')) {
+        callback = options;
+        options = null;
+      }
+      httpCache = false;
+      if (options && options.httpCache) {
+        httpCache = true;
+      }
+      xhr = new Dropbox.Xhr('GET', this.urls.accountInfo);
+      xhr.signWithOauth(this.oauth, httpCache);
+      return this.dispatchXhr(xhr, function(error, userData) {
+        return callback(error, Dropbox.UserInfo.parse(userData), userData);
+      });
+    };
+
+    Client.prototype.readFile = function(path, options, callback) {
+      var httpCache, params, rangeEnd, rangeHeader, rangeStart, responseType, xhr;
+
+      if ((!callback) && (typeof options === 'function')) {
+        callback = options;
+        options = null;
+      }
+      params = {};
+      responseType = 'text';
+      rangeHeader = null;
+      httpCache = false;
+      if (options) {
+        if (options.versionTag) {
+          params.rev = options.versionTag;
+        } else if (options.rev) {
+          params.rev = options.rev;
+        }
+        if (options.arrayBuffer) {
+          responseType = 'arraybuffer';
+        } else if (options.blob) {
+          responseType = 'blob';
+        } else if (options.buffer) {
+          responseType = 'buffer';
+        } else if (options.binary) {
+          responseType = 'b';
+        }
+        if (options.length) {
+          if (options.start != null) {
+            rangeStart = options.start;
+            rangeEnd = options.start + options.length - 1;
+          } else {
+            rangeStart = '';
+            rangeEnd = options.length;
+          }
+          rangeHeader = "bytes=" + rangeStart + "-" + rangeEnd;
+        } else if (options.start != null) {
+          rangeHeader = "bytes=" + options.start + "-";
+        }
+        if (options.httpCache) {
+          httpCache = true;
+        }
+      }
+      xhr = new Dropbox.Xhr('GET', "" + this.urls.getFile + "/" + (this.urlEncodePath(path)));
+      xhr.setParams(params).signWithOauth(this.oauth, httpCache);
+      xhr.setResponseType(responseType);
+      if (rangeHeader) {
+        if (rangeHeader) {
+          xhr.setHeader('Range', rangeHeader);
+        }
+        xhr.reportResponseHeaders();
+      }
+      return this.dispatchXhr(xhr, function(error, data, metadata, headers) {
+        var rangeInfo;
+
+        if (headers) {
+          rangeInfo = Dropbox.RangeInfo.parse(headers['content-range']);
+        } else {
+          rangeInfo = null;
+        }
+        return callback(error, data, Dropbox.Stat.parse(metadata), rangeInfo);
+      });
+    };
+
+    Client.prototype.writeFile = function(path, data, options, callback) {
+      var useForm;
+
+      if ((!callback) && (typeof options === 'function')) {
+        callback = options;
+        options = null;
+      }
+      useForm = Dropbox.Xhr.canSendForms && typeof data === 'object';
+      if (useForm) {
+        return this.writeFileUsingForm(path, data, options, callback);
+      } else {
+        return this.writeFileUsingPut(path, data, options, callback);
+      }
+    };
+
+    Client.prototype.writeFileUsingForm = function(path, data, options, callback) {
+      var fileName, params, slashIndex, xhr;
+
+      slashIndex = path.lastIndexOf('/');
+      if (slashIndex === -1) {
+        fileName = path;
+        path = '';
+      } else {
+        fileName = path.substring(slashIndex);
+        path = path.substring(0, slashIndex);
+      }
+      params = {
+        file: fileName
+      };
+      if (options) {
+        if (options.noOverwrite) {
+          params.overwrite = 'false';
+        }
+        if (options.lastVersionTag) {
+          params.parent_rev = options.lastVersionTag;
+        } else if (options.parentRev || options.parent_rev) {
+          params.parent_rev = options.parentRev || options.parent_rev;
+        }
+      }
+      xhr = new Dropbox.Xhr('POST', "" + this.urls.postFile + "/" + (this.urlEncodePath(path)));
+      xhr.setParams(params).signWithOauth(this.oauth).setFileField('file', fileName, data, 'application/octet-stream');
+      delete params.file;
+      return this.dispatchXhr(xhr, function(error, metadata) {
+        if (callback) {
+          return callback(error, Dropbox.Stat.parse(metadata));
+        }
+      });
+    };
+
+    Client.prototype.writeFileUsingPut = function(path, data, options, callback) {
+      var params, xhr;
+
+      params = {};
+      if (options) {
+        if (options.noOverwrite) {
+          params.overwrite = 'false';
+        }
+        if (options.lastVersionTag) {
+          params.parent_rev = options.lastVersionTag;
+        } else if (options.parentRev || options.parent_rev) {
+          params.parent_rev = options.parentRev || options.parent_rev;
+        }
+      }
+      xhr = new Dropbox.Xhr('POST', "" + this.urls.putFile + "/" + (this.urlEncodePath(path)));
+      xhr.setBody(data).setParams(params).signWithOauth(this.oauth);
+      return this.dispatchXhr(xhr, function(error, metadata) {
+        if (callback) {
+          return callback(error, Dropbox.Stat.parse(metadata));
+        }
+      });
+    };
+
+    Client.prototype.resumableUploadStep = function(data, cursor, callback) {
+      var params, xhr;
+
+      if (cursor) {
+        params = {
+          offset: cursor.offset
+        };
+        if (cursor.tag) {
+          params.upload_id = cursor.tag;
+        }
+      } else {
+        params = {
+          offset: 0
+        };
+      }
+      xhr = new Dropbox.Xhr('POST', this.urls.chunkedUpload);
+      xhr.setBody(data).setParams(params).signWithOauth(this.oauth);
+      return this.dispatchXhr(xhr, function(error, cursor) {
+        if (error && error.status === Dropbox.ApiError.INVALID_PARAM && error.response && error.response.upload_id && error.response.offset) {
+          return callback(null, Dropbox.UploadCursor.parse(error.response));
+        } else {
+          return callback(error, Dropbox.UploadCursor.parse(cursor));
+        }
+      });
+    };
+
+    Client.prototype.resumableUploadFinish = function(path, cursor, options, callback) {
+      var params, xhr;
+
+      if ((!callback) && (typeof options === 'function')) {
+        callback = options;
+        options = null;
+      }
+      params = {
+        upload_id: cursor.tag
+      };
+      if (options) {
+        if (options.lastVersionTag) {
+          params.parent_rev = options.lastVersionTag;
+        } else if (options.parentRev || options.parent_rev) {
+          params.parent_rev = options.parentRev || options.parent_rev;
+        }
+        if (options.noOverwrite) {
+          params.overwrite = 'false';
+        }
+      }
+      xhr = new Dropbox.Xhr('POST', "" + this.urls.commitChunkedUpload + "/" + (this.urlEncodePath(path)));
+      xhr.setParams(params).signWithOauth(this.oauth);
+      return this.dispatchXhr(xhr, function(error, metadata) {
+        if (callback) {
+          return callback(error, Dropbox.Stat.parse(metadata));
+        }
+      });
+    };
+
+    Client.prototype.stat = function(path, options, callback) {
+      var httpCache, params, xhr;
+
+      if ((!callback) && (typeof options === 'function')) {
+        callback = options;
+        options = null;
+      }
+      params = {};
+      httpCache = false;
+      if (options) {
+        if (options.version != null) {
+          params.rev = options.version;
+        }
+        if (options.removed || options.deleted) {
+          params.include_deleted = 'true';
+        }
+        if (options.readDir) {
+          params.list = 'true';
+          if (options.readDir !== true) {
+            params.file_limit = options.readDir.toString();
+          }
+        }
+        if (options.cacheHash) {
+          params.hash = options.cacheHash;
+        }
+        if (options.httpCache) {
+          httpCache = true;
+        }
+      }
+      params.include_deleted || (params.include_deleted = 'false');
+      params.list || (params.list = 'false');
+      xhr = new Dropbox.Xhr('GET', "" + this.urls.metadata + "/" + (this.urlEncodePath(path)));
+      xhr.setParams(params).signWithOauth(this.oauth, httpCache);
+      return this.dispatchXhr(xhr, function(error, metadata) {
+        var entries, entry, stat;
+
+        stat = Dropbox.Stat.parse(metadata);
+        if (metadata != null ? metadata.contents : void 0) {
+          entries = (function() {
+            var _i, _len, _ref, _results;
+
+            _ref = metadata.contents;
+            _results = [];
+            for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+              entry = _ref[_i];
+              _results.push(Dropbox.Stat.parse(entry));
+            }
+            return _results;
+          })();
+        } else {
+          entries = void 0;
+        }
+        return callback(error, stat, entries);
+      });
+    };
+
+    Client.prototype.readdir = function(path, options, callback) {
+      var statOptions;
+
+      if ((!callback) && (typeof options === 'function')) {
+        callback = options;
+        options = null;
+      }
+      statOptions = {
+        readDir: true
+      };
+      if (options) {
+        if (options.limit != null) {
+          statOptions.readDir = options.limit;
+        }
+        if (options.versionTag) {
+          statOptions.versionTag = options.versionTag;
+        }
+        if (options.removed || options.deleted) {
+          statOptions.removed = options.removed || options.deleted;
+        }
+        if (options.httpCache) {
+          statOptions.httpCache = options.httpCache;
+        }
+      }
+      return this.stat(path, statOptions, function(error, stat, entry_stats) {
+        var entries, entry_stat;
+
+        if (entry_stats) {
+          entries = (function() {
+            var _i, _len, _results;
+
+            _results = [];
+            for (_i = 0, _len = entry_stats.length; _i < _len; _i++) {
+              entry_stat = entry_stats[_i];
+              _results.push(entry_stat.name);
+            }
+            return _results;
+          })();
+        } else {
+          entries = null;
+        }
+        return callback(error, entries, stat, entry_stats);
+      });
+    };
+
+    Client.prototype.metadata = function(path, options, callback) {
+      return this.stat(path, options, callback);
+    };
+
+    Client.prototype.makeUrl = function(path, options, callback) {
+      var isDirect, params, url, useDownloadHack, xhr,
+        _this = this;
+
+      if ((!callback) && (typeof options === 'function')) {
+        callback = options;
+        options = null;
+      }
+      if (options && (options['long'] || options.longUrl || options.downloadHack)) {
+        params = {
+          short_url: 'false'
+        };
+      } else {
+        params = {};
+      }
+      path = this.urlEncodePath(path);
+      url = "" + this.urls.shares + "/" + path;
+      isDirect = false;
+      useDownloadHack = false;
+      if (options) {
+        if (options.downloadHack) {
+          isDirect = true;
+          useDownloadHack = true;
+        } else if (options.download) {
+          isDirect = true;
+          url = "" + this.urls.media + "/" + path;
+        }
+      }
+      xhr = new Dropbox.Xhr('POST', url).setParams(params).signWithOauth(this.oauth);
+      return this.dispatchXhr(xhr, function(error, urlData) {
+        if (useDownloadHack && (urlData != null ? urlData.url : void 0)) {
+          urlData.url = urlData.url.replace(_this.authServer, _this.downloadServer);
+        }
+        return callback(error, Dropbox.PublicUrl.parse(urlData, isDirect));
+      });
+    };
+
+    Client.prototype.history = function(path, options, callback) {
+      var httpCache, params, xhr;
+
+      if ((!callback) && (typeof options === 'function')) {
+        callback = options;
+        options = null;
+      }
+      params = {};
+      httpCache = false;
+      if (options) {
+        if (options.limit != null) {
+          params.rev_limit = options.limit;
+        }
+        if (options.httpCache) {
+          httpCache = true;
+        }
+      }
+      xhr = new Dropbox.Xhr('GET', "" + this.urls.revisions + "/" + (this.urlEncodePath(path)));
+      xhr.setParams(params).signWithOauth(this.oauth, httpCache);
+      return this.dispatchXhr(xhr, function(error, versions) {
+        var metadata, stats;
+
+        if (versions) {
+          stats = (function() {
+            var _i, _len, _results;
+
+            _results = [];
+            for (_i = 0, _len = versions.length; _i < _len; _i++) {
+              metadata = versions[_i];
+              _results.push(Dropbox.Stat.parse(metadata));
+            }
+            return _results;
+          })();
+        } else {
+          stats = void 0;
+        }
+        return callback(error, stats);
+      });
+    };
+
+    Client.prototype.revisions = function(path, options, callback) {
+      return this.history(path, options, callback);
+    };
+
+    Client.prototype.thumbnailUrl = function(path, options) {
+      var xhr;
+
+      xhr = this.thumbnailXhr(path, options);
+      return xhr.paramsToUrl().url;
+    };
+
+    Client.prototype.readThumbnail = function(path, options, callback) {
+      var responseType, xhr;
+
+      if ((!callback) && (typeof options === 'function')) {
+        callback = options;
+        options = null;
+      }
+      responseType = 'b';
+      if (options) {
+        if (options.blob) {
+          responseType = 'blob';
+        }
+        if (options.arrayBuffer) {
+          responseType = 'arraybuffer';
+        }
+        if (options.buffer) {
+          responseType = 'buffer';
+        }
+      }
+      xhr = this.thumbnailXhr(path, options);
+      xhr.setResponseType(responseType);
+      return this.dispatchXhr(xhr, function(error, data, metadata) {
+        return callback(error, data, Dropbox.Stat.parse(metadata));
+      });
+    };
+
+    Client.prototype.thumbnailXhr = function(path, options) {
+      var params, xhr;
+
+      params = {};
+      if (options) {
+        if (options.format) {
+          params.format = options.format;
+        } else if (options.png) {
+          params.format = 'png';
+        }
+        if (options.size) {
+          params.size = options.size;
+        }
+      }
+      xhr = new Dropbox.Xhr('GET', "" + this.urls.thumbnails + "/" + (this.urlEncodePath(path)));
+      return xhr.setParams(params).signWithOauth(this.oauth);
+    };
+
+    Client.prototype.revertFile = function(path, versionTag, callback) {
+      var xhr;
+
+      xhr = new Dropbox.Xhr('POST', "" + this.urls.restore + "/" + (this.urlEncodePath(path)));
+      xhr.setParams({
+        rev: versionTag
+      }).signWithOauth(this.oauth);
+      return this.dispatchXhr(xhr, function(error, metadata) {
+        if (callback) {
+          return callback(error, Dropbox.Stat.parse(metadata));
+        }
+      });
+    };
+
+    Client.prototype.restore = function(path, versionTag, callback) {
+      return this.revertFile(path, versionTag, callback);
+    };
+
+    Client.prototype.findByName = function(path, namePattern, options, callback) {
+      var httpCache, params, xhr;
+
+      if ((!callback) && (typeof options === 'function')) {
+        callback = options;
+        options = null;
+      }
+      params = {
+        query: namePattern
+      };
+      httpCache = false;
+      if (options) {
+        if (options.limit != null) {
+          params.file_limit = options.limit;
+        }
+        if (options.removed || options.deleted) {
+          params.include_deleted = true;
+        }
+        if (options.httpCache) {
+          httpCache = true;
+        }
+      }
+      xhr = new Dropbox.Xhr('GET', "" + this.urls.search + "/" + (this.urlEncodePath(path)));
+      xhr.setParams(params).signWithOauth(this.oauth, httpCache);
+      return this.dispatchXhr(xhr, function(error, results) {
+        var metadata, stats;
+
+        if (results) {
+          stats = (function() {
+            var _i, _len, _results;
+
+            _results = [];
+            for (_i = 0, _len = results.length; _i < _len; _i++) {
+              metadata = results[_i];
+              _results.push(Dropbox.Stat.parse(metadata));
+            }
+            return _results;
+          })();
+        } else {
+          stats = void 0;
+        }
+        return callback(error, stats);
+      });
+    };
+
+    Client.prototype.search = function(path, namePattern, options, callback) {
+      return this.findByName(path, namePattern, options, callback);
+    };
+
+    Client.prototype.makeCopyReference = function(path, callback) {
+      var xhr;
+
+      xhr = new Dropbox.Xhr('GET', "" + this.urls.copyRef + "/" + (this.urlEncodePath(path)));
+      xhr.signWithOauth(this.oauth);
+      return this.dispatchXhr(xhr, function(error, refData) {
+        return callback(error, Dropbox.CopyReference.parse(refData));
+      });
+    };
+
+    Client.prototype.copyRef = function(path, callback) {
+      return this.makeCopyReference(path, callback);
+    };
+
+    Client.prototype.pullChanges = function(cursor, callback) {
+      var params, xhr;
+
+      if ((!callback) && (typeof cursor === 'function')) {
+        callback = cursor;
+        cursor = null;
+      }
+      if (cursor) {
+        if (cursor.cursorTag) {
+          params = {
+            cursor: cursor.cursorTag
+          };
+        } else {
+          params = {
+            cursor: cursor
+          };
+        }
+      } else {
+        params = {};
+      }
+      xhr = new Dropbox.Xhr('POST', this.urls.delta);
+      xhr.setParams(params).signWithOauth(this.oauth);
+      return this.dispatchXhr(xhr, function(error, deltaInfo) {
+        return callback(error, Dropbox.PulledChanges.parse(deltaInfo));
+      });
+    };
+
+    Client.prototype.delta = function(cursor, callback) {
+      return this.pullChanges(cursor, callback);
+    };
+
+    Client.prototype.mkdir = function(path, callback) {
+      var xhr;
+
+      xhr = new Dropbox.Xhr('POST', this.urls.fileopsCreateFolder);
+      xhr.setParams({
+        root: this.fileRoot,
+        path: this.normalizePath(path)
+      }).signWithOauth(this.oauth);
+      return this.dispatchXhr(xhr, function(error, metadata) {
+        if (callback) {
+          return callback(error, Dropbox.Stat.parse(metadata));
+        }
+      });
+    };
+
+    Client.prototype.remove = function(path, callback) {
+      var xhr;
+
+      xhr = new Dropbox.Xhr('POST', this.urls.fileopsDelete);
+      xhr.setParams({
+        root: this.fileRoot,
+        path: this.normalizePath(path)
+      }).signWithOauth(this.oauth);
+      return this.dispatchXhr(xhr, function(error, metadata) {
+        if (callback) {
+          return callback(error, Dropbox.Stat.parse(metadata));
+        }
+      });
+    };
+
+    Client.prototype.unlink = function(path, callback) {
+      return this.remove(path, callback);
+    };
+
+    Client.prototype["delete"] = function(path, callback) {
+      return this.remove(path, callback);
+    };
+
+    Client.prototype.copy = function(from, toPath, callback) {
+      var options, params, xhr;
+
+      if ((!callback) && (typeof options === 'function')) {
+        callback = options;
+        options = null;
+      }
+      params = {
+        root: this.fileRoot,
+        to_path: this.normalizePath(toPath)
+      };
+      if (from instanceof Dropbox.CopyReference) {
+        params.from_copy_ref = from.tag;
+      } else {
+        params.from_path = this.normalizePath(from);
+      }
+      xhr = new Dropbox.Xhr('POST', this.urls.fileopsCopy);
+      xhr.setParams(params).signWithOauth(this.oauth);
+      return this.dispatchXhr(xhr, function(error, metadata) {
+        if (callback) {
+          return callback(error, Dropbox.Stat.parse(metadata));
+        }
+      });
+    };
+
+    Client.prototype.move = function(fromPath, toPath, callback) {
+      var options, xhr;
+
+      if ((!callback) && (typeof options === 'function')) {
+        callback = options;
+        options = null;
+      }
+      xhr = new Dropbox.Xhr('POST', this.urls.fileopsMove);
+      xhr.setParams({
+        root: this.fileRoot,
+        from_path: this.normalizePath(fromPath),
+        to_path: this.normalizePath(toPath)
+      }).signWithOauth(this.oauth);
+      return this.dispatchXhr(xhr, function(error, metadata) {
+        if (callback) {
+          return callback(error, Dropbox.Stat.parse(metadata));
+        }
+      });
+    };
+
+    Client.prototype.reset = function() {
+      var oldAuthState;
+
+      this.uid = null;
+      this.oauth.setToken(null, '');
+      oldAuthState = this.authState;
+      this.authState = DropboxClient.RESET;
+      if (oldAuthState !== this.authState) {
+        this.onAuthStateChange.dispatch(this);
+      }
+      this.authError = null;
+      this._credentials = null;
+      return this;
+    };
+
+    Client.prototype.setCredentials = function(credentials) {
+      var oldAuthState;
+
+      oldAuthState = this.authState;
+      this.oauth.reset(credentials);
+      this.uid = credentials.uid || null;
+      if (credentials.authState) {
+        this.authState = credentials.authState;
+      } else {
+        if (credentials.token) {
+          this.authState = DropboxClient.DONE;
+        } else {
+          this.authState = DropboxClient.RESET;
+        }
+      }
+      this.authError = null;
+      this._credentials = null;
+      if (oldAuthState !== this.authState) {
+        this.onAuthStateChange.dispatch(this);
+      }
+      return this;
+    };
+
+    Client.prototype.appHash = function() {
+      return this.oauth.appHash();
+    };
+
+    Client.prototype.setupUrls = function() {
+      this.fileRoot = this.sandbox ? 'sandbox' : 'dropbox';
+      return this.urls = {
+        requestToken: "" + this.apiServer + "/1/oauth/request_token",
+        authorize: "" + this.authServer + "/1/oauth/authorize",
+        accessToken: "" + this.apiServer + "/1/oauth/access_token",
+        signOut: "" + this.apiServer + "/1/unlink_access_token",
+        accountInfo: "" + this.apiServer + "/1/account/info",
+        getFile: "" + this.fileServer + "/1/files/" + this.fileRoot,
+        postFile: "" + this.fileServer + "/1/files/" + this.fileRoot,
+        putFile: "" + this.fileServer + "/1/files_put/" + this.fileRoot,
+        metadata: "" + this.apiServer + "/1/metadata/" + this.fileRoot,
+        delta: "" + this.apiServer + "/1/delta",
+        revisions: "" + this.apiServer + "/1/revisions/" + this.fileRoot,
+        restore: "" + this.apiServer + "/1/restore/" + this.fileRoot,
+        search: "" + this.apiServer + "/1/search/" + this.fileRoot,
+        shares: "" + this.apiServer + "/1/shares/" + this.fileRoot,
+        media: "" + this.apiServer + "/1/media/" + this.fileRoot,
+        copyRef: "" + this.apiServer + "/1/copy_ref/" + this.fileRoot,
+        thumbnails: "" + this.fileServer + "/1/thumbnails/" + this.fileRoot,
+        chunkedUpload: "" + this.fileServer + "/1/chunked_upload",
+        commitChunkedUpload: "" + this.fileServer + "/1/commit_chunked_upload/" + this.fileRoot,
+        fileopsCopy: "" + this.apiServer + "/1/fileops/copy",
+        fileopsCreateFolder: "" + this.apiServer + "/1/fileops/create_folder",
+        fileopsDelete: "" + this.apiServer + "/1/fileops/delete",
+        fileopsMove: "" + this.apiServer + "/1/fileops/move"
+      };
+    };
+
+    Client.prototype.authState = null;
+
+    Client.ERROR = 0;
+
+    Client.RESET = 1;
+
+    Client.REQUEST = 2;
+
+    Client.AUTHORIZED = 3;
+
+    Client.DONE = 4;
+
+    Client.SIGNED_OFF = 5;
+
+    Client.prototype.urlEncodePath = function(path) {
+      return Dropbox.Xhr.urlEncodeValue(this.normalizePath(path)).replace(/%2F/gi, '/');
+    };
+
+    Client.prototype.normalizePath = function(path) {
+      var i;
+
+      if (path.substring(0, 1) === '/') {
+        i = 1;
+        while (path.substring(i, i + 1) === '/') {
+          i += 1;
+        }
+        return path.substring(i);
+      } else {
+        return path;
+      }
+    };
+
+    Client.prototype.requestToken = function(callback) {
+      var xhr;
+
+      xhr = new Dropbox.Xhr('POST', this.urls.requestToken).signWithOauth(this.oauth);
+      return this.dispatchXhr(xhr, callback);
+    };
+
+    Client.prototype.authorizeUrl = function(token) {
+      var callbackUrl, params;
+
+      callbackUrl = this.driver.url(token);
+      if (callbackUrl === null) {
+        params = {
+          oauth_token: token
+        };
+      } else {
+        params = {
+          oauth_token: token,
+          oauth_callback: callbackUrl
+        };
+      }
+      return ("" + this.urls.authorize + "?") + Dropbox.Xhr.urlEncode(params);
+    };
+
+    Client.prototype.getAccessToken = function(callback) {
+      var xhr;
+
+      xhr = new Dropbox.Xhr('POST', this.urls.accessToken).signWithOauth(this.oauth);
+      return this.dispatchXhr(xhr, callback);
+    };
+
+    Client.prototype.dispatchXhr = function(xhr, callback) {
+      var nativeXhr;
+
+      xhr.setCallback(callback);
+      xhr.onError = this.xhrOnErrorHandler;
+      xhr.prepare();
+      nativeXhr = xhr.xhr;
+      if (this.onXhr.dispatch(xhr)) {
+        xhr.send();
+      }
+      return nativeXhr;
+    };
+
+    Client.prototype.handleXhrError = function(error, callback) {
+      var _this = this;
+
+      if (error.status === Dropbox.ApiError.INVALID_TOKEN && this.authState === DropboxClient.DONE) {
+        this.authError = error;
+        this.authState = DropboxClient.ERROR;
+        this.onAuthStateChange.dispatch(this);
+        if (this.driver && this.driver.onAuthStateChange) {
+          this.driver.onAuthStateChange(this, function() {
+            _this.onError.dispatch(error);
+            return callback(error);
+          });
+          return null;
+        }
+      }
+      this.onError.dispatch(error);
+      callback(error);
+      return null;
+    };
+
+    Client.prototype.defaultApiServer = function() {
+      return 'https://api.dropbox.com';
+    };
+
+    Client.prototype.defaultAuthServer = function() {
+      return this.apiServer.replace('api.', 'www.');
+    };
+
+    Client.prototype.defaultFileServer = function() {
+      return this.apiServer.replace('api.', 'api-content.');
+    };
+
+    Client.prototype.defaultDownloadServer = function() {
+      return this.apiServer.replace('api.', 'dl.');
+    };
+
+    Client.prototype.computeCredentials = function() {
+      var value;
+
+      value = {
+        key: this.oauth.key,
+        sandbox: this.sandbox
+      };
+      if (this.oauth.secret) {
+        value.secret = this.oauth.secret;
+      }
+      if (this.oauth.token) {
+        value.token = this.oauth.token;
+        value.tokenSecret = this.oauth.tokenSecret;
+      }
+      if (this.uid) {
+        value.uid = this.uid;
+      }
+      if (this.authState !== DropboxClient.ERROR && this.authState !== DropboxClient.RESET && this.authState !== DropboxClient.DONE && this.authState !== DropboxClient.SIGNED_OFF) {
+        value.authState = this.authState;
+      }
+      if (this.apiServer !== this.defaultApiServer()) {
+        value.server = this.apiServer;
+      }
+      if (this.authServer !== this.defaultAuthServer()) {
+        value.authServer = this.authServer;
+      }
+      if (this.fileServer !== this.defaultFileServer()) {
+        value.fileServer = this.fileServer;
+      }
+      if (this.downloadServer !== this.defaultDownloadServer()) {
+        value.downloadServer = this.downloadServer;
+      }
+      return this._credentials = value;
+    };
+
+    return Client;
+
+  })();
+
+  DropboxClient = Dropbox.Client;
+
+  Dropbox.Drivers.BrowserBase = (function() {
+    function BrowserBase(options) {
+      this.rememberUser = (options != null ? options.rememberUser : void 0) || false;
+      this.useQuery = (options != null ? options.useQuery : void 0) || false;
+      this.scope = (options != null ? options.scope : void 0) || 'default';
+      this.storageKey = null;
+      this.dbTokenRe = new RegExp("(#|\\?|&)dboauth_token=([^&#]+)(&|#|$)");
+      this.rejectedRe = new RegExp("(#|\\?|&)not_approved=true(&|#|$)");
+      this.tokenRe = new RegExp("(#|\\?|&)oauth_token=([^&#]+)(&|#|$)");
+    }
+
+    BrowserBase.prototype.onAuthStateChange = function(client, callback) {
+      var _this = this;
+
+      this.setStorageKey(client);
+      switch (client.authState) {
+        case DropboxClient.RESET:
+          return this.loadCredentials(function(credentials) {
+            if (!credentials) {
+              return callback();
+            }
+            if (credentials.authState) {
+              client.setCredentials(credentials);
+              return callback();
+            }
+            if (!_this.rememberUser) {
+              return _this.forgetCredentials(callback);
+            }
+            client.setCredentials(credentials);
+            return client.getUserInfo(function(error) {
+              if (error) {
+                client.reset();
+                return _this.forgetCredentials(callback);
+              } else {
+                return callback();
+              }
+            });
+          });
+        case DropboxClient.REQUEST:
+          return this.storeCredentials(client.credentials(), callback);
+        case DropboxClient.DONE:
+          if (this.rememberUser) {
+            return this.storeCredentials(client.credentials(), callback);
+          }
+          return this.forgetCredentials(callback);
+        case DropboxClient.SIGNED_OFF:
+          return this.forgetCredentials(callback);
+        case DropboxClient.ERROR:
+          return this.forgetCredentials(callback);
+        default:
+          callback();
+          return this;
+      }
+    };
+
+    BrowserBase.prototype.setStorageKey = function(client) {
+      this.storageKey = "dropbox-auth:" + this.scope + ":" + (client.appHash());
+      return this;
+    };
+
+    BrowserBase.prototype.storeCredentials = function(credentials, callback) {
+      localStorage.setItem(this.storageKey, JSON.stringify(credentials));
+      callback();
+      return this;
+    };
+
+    BrowserBase.prototype.loadCredentials = function(callback) {
+      var jsonError, jsonString;
+
+      jsonString = localStorage.getItem(this.storageKey);
+      if (!jsonString) {
+        callback(null);
+        return this;
+      }
+      try {
+        callback(JSON.parse(jsonString));
+      } catch (_error) {
+        jsonError = _error;
+        callback(null);
+      }
+      return this;
+    };
+
+    BrowserBase.prototype.forgetCredentials = function(callback) {
+      localStorage.removeItem(this.storageKey);
+      callback();
+      return this;
+    };
+
+    BrowserBase.prototype.computeUrl = function(baseUrl) {
+      var fragment, location, locationPair, querySuffix;
+
+      querySuffix = "_dropboxjs_scope=" + (encodeURIComponent(this.scope)) + "&dboauth_token=";
+      location = baseUrl;
+      if (location.indexOf('#') === -1) {
+        fragment = null;
+      } else {
+        locationPair = location.split('#', 2);
+        location = locationPair[0];
+        fragment = locationPair[1];
+      }
+      if (this.useQuery) {
+        if (location.indexOf('?') === -1) {
+          location += "?" + querySuffix;
+        } else {
+          location += "&" + querySuffix;
+        }
+        if (fragment) {
+          return [location, '#' + fragment];
+        } else {
+          return [location, ''];
+        }
+      } else {
+        return [location + '#?' + querySuffix, ''];
+      }
+    };
+
+    BrowserBase.prototype.locationToken = function(url) {
+      var location, match, scopePattern;
+
+      location = url || Dropbox.Drivers.BrowserBase.currentLocation();
+      scopePattern = "_dropboxjs_scope=" + (encodeURIComponent(this.scope)) + "&";
+      if ((typeof location.indexOf === "function" ? location.indexOf(scopePattern) : void 0) === -1) {
+        return null;
+      }
+      if (this.rejectedRe.test(location)) {
+        match = this.dbTokenRe.exec(location);
+        if (match) {
+          return decodeURIComponent(match[2]);
+        } else {
+          return null;
+        }
+      }
+      match = this.tokenRe.exec(location);
+      if (match) {
+        return decodeURIComponent(match[2]);
+      }
+      return null;
+    };
+
+    BrowserBase.currentLocation = function() {
+      return window.location.href;
+    };
+
+    return BrowserBase;
+
+  })();
+
+  Dropbox.Drivers.Redirect = (function(_super) {
+    __extends(Redirect, _super);
+
+    function Redirect(options) {
+      var _ref;
+
+      Redirect.__super__.constructor.call(this, options);
+      _ref = this.computeUrl(Dropbox.Drivers.BrowserBase.currentLocation()), this.receiverUrl1 = _ref[0], this.receiverUrl2 = _ref[1];
+    }
+
+    Redirect.prototype.onAuthStateChange = function(client, callback) {
+      var superCall,
+        _this = this;
+
+      superCall = (function() {
+        return function() {
+          return Redirect.__super__.onAuthStateChange.call(_this, client, callback);
+        };
+      })();
+      this.setStorageKey(client);
+      if (client.authState === DropboxClient.RESET) {
+        return this.loadCredentials(function(credentials) {
+          if (credentials && credentials.authState) {
+            if (credentials.token === _this.locationToken() && credentials.authState === DropboxClient.REQUEST) {
+              credentials.authState = DropboxClient.AUTHORIZED;
+              return _this.storeCredentials(credentials, superCall);
+            } else {
+              return _this.forgetCredentials(superCall);
+            }
+          }
+          return superCall();
+        });
+      } else {
+        return superCall();
+      }
+    };
+
+    Redirect.prototype.url = function(token) {
+      return this.receiverUrl1 + encodeURIComponent(token) + this.receiverUrl2;
+    };
+
+    Redirect.prototype.doAuthorize = function(authUrl) {
+      return window.location.assign(authUrl);
+    };
+
+    return Redirect;
+
+  })(Dropbox.Drivers.BrowserBase);
+
+  Dropbox.Drivers.Popup = (function(_super) {
+    __extends(Popup, _super);
+
+    function Popup(options) {
+      var _ref;
+
+      Popup.__super__.constructor.call(this, options);
+      _ref = this.computeUrl(this.baseUrl(options)), this.receiverUrl1 = _ref[0], this.receiverUrl2 = _ref[1];
+    }
+
+    Popup.prototype.onAuthStateChange = function(client, callback) {
+      var superCall,
+        _this = this;
+
+      superCall = (function() {
+        return function() {
+          return Popup.__super__.onAuthStateChange.call(_this, client, callback);
+        };
+      })();
+      this.setStorageKey(client);
+      if (client.authState === DropboxClient.RESET) {
+        return this.loadCredentials(function(credentials) {
+          if (credentials && credentials.authState) {
+            return _this.forgetCredentials(superCall);
+          }
+          return superCall();
+        });
+      } else {
+        return superCall();
+      }
+    };
+
+    Popup.prototype.doAuthorize = function(authUrl, token, tokenSecret, callback) {
+      this.listenForMessage(token, callback);
+      return this.openWindow(authUrl);
+    };
+
+    Popup.prototype.url = function(token) {
+      return this.receiverUrl1 + encodeURIComponent(token) + this.receiverUrl2;
+    };
+
+    Popup.prototype.baseUrl = function(options) {
+      var fragments;
+
+      if (options) {
+        if (options.receiverUrl) {
+          return options.receiverUrl;
+        } else if (options.receiverFile) {
+          fragments = Dropbox.Drivers.BrowserBase.currentLocation().split('/');
+          fragments[fragments.length - 1] = options.receiverFile;
+          return fragments.join('/');
+        }
+      }
+      return Dropbox.Drivers.BrowserBase.currentLocation();
+    };
+
+    Popup.prototype.openWindow = function(url) {
+      return window.open(url, '_dropboxOauthSigninWindow', this.popupWindowSpec(980, 700));
+    };
+
+    Popup.prototype.popupWindowSpec = function(popupWidth, popupHeight) {
+      var height, popupLeft, popupTop, width, x0, y0, _ref, _ref1, _ref2, _ref3;
+
+      x0 = (_ref = window.screenX) != null ? _ref : window.screenLeft;
+      y0 = (_ref1 = window.screenY) != null ? _ref1 : window.screenTop;
+      width = (_ref2 = window.outerWidth) != null ? _ref2 : document.documentElement.clientWidth;
+      height = (_ref3 = window.outerHeight) != null ? _ref3 : document.documentElement.clientHeight;
+      popupLeft = Math.round(x0 + (width - popupWidth) / 2);
+      popupTop = Math.round(y0 + (height - popupHeight) / 2.5);
+      if (popupLeft < x0) {
+        popupLeft = x0;
+      }
+      if (popupTop < y0) {
+        popupTop = y0;
+      }
+      return ("width=" + popupWidth + ",height=" + popupHeight + ",") + ("left=" + popupLeft + ",top=" + popupTop) + 'dialog=yes,dependent=yes,scrollbars=yes,location=yes';
+    };
+
+    Popup.prototype.listenForMessage = function(token, callback) {
+      var listener,
+        _this = this;
+
+      listener = function(event) {
+        var data;
+
+        if (event.data) {
+          data = event.data;
+        } else {
+          data = event;
+        }
+        if (_this.locationToken(data) === token) {
+          token = null;
+          window.removeEventListener('message', listener);
+          Dropbox.Drivers.Popup.onMessage.removeListener(listener);
+          return callback();
+        }
+      };
+      window.addEventListener('message', listener, false);
+      return Dropbox.Drivers.Popup.onMessage.addListener(listener);
+    };
+
+    Popup.oauthReceiver = function() {
+      return window.addEventListener('load', function() {
+        var frameError, ieError, opener;
+
+        opener = window.opener;
+        if (window.parent !== window.top) {
+          opener || (opener = window.parent);
+        }
+        if (opener) {
+          try {
+            opener.postMessage(window.location.href, '*');
+          } catch (_error) {
+            ieError = _error;
+          }
+          try {
+            opener.Dropbox.Drivers.Popup.onMessage.dispatch(window.location.href);
+          } catch (_error) {
+            frameError = _error;
+          }
+        }
+        return window.close();
+      });
+    };
+
+    Popup.onMessage = new Dropbox.EventSource;
+
+    return Popup;
+
+  })(Dropbox.Drivers.BrowserBase);
+
+  DropboxChromeOnMessage = null;
+
+  DropboxChromeSendMessage = null;
+
+  if (typeof chrome !== "undefined" && chrome !== null) {
+    if (chrome.runtime) {
+      if (chrome.runtime.onMessage) {
+        DropboxChromeOnMessage = chrome.runtime.onMessage;
+      }
+      if (chrome.runtime.sendMessage) {
+        DropboxChromeSendMessage = function(m) {
+          return chrome.runtime.sendMessage(m);
+        };
+      }
+    }
+    if (chrome.extension) {
+      if (chrome.extension.onMessage) {
+        DropboxChromeOnMessage || (DropboxChromeOnMessage = chrome.extension.onMessage);
+      }
+      if (chrome.extension.sendMessage) {
+        DropboxChromeSendMessage || (DropboxChromeSendMessage = function(m) {
+          return chrome.extension.sendMessage(m);
+        });
+      }
+    }
+    if (!DropboxChromeOnMessage) {
+      (function() {
+        var page, pageHack;
+
+        pageHack = function(page) {
+          if (page.Dropbox) {
+            Dropbox.Drivers.Chrome.prototype.onMessage = page.Dropbox.Drivers.Chrome.onMessage;
+            return Dropbox.Drivers.Chrome.prototype.sendMessage = page.Dropbox.Drivers.Chrome.sendMessage;
+          } else {
+            page.Dropbox = Dropbox;
+            Dropbox.Drivers.Chrome.prototype.onMessage = new Dropbox.EventSource;
+            return Dropbox.Drivers.Chrome.prototype.sendMessage = function(m) {
+              return Dropbox.Drivers.Chrome.prototype.onMessage.dispatch(m);
+            };
+          }
+        };
+        if (chrome.extension && chrome.extension.getBackgroundPage) {
+          if (page = chrome.extension.getBackgroundPage()) {
+            return pageHack(page);
+          }
+        }
+        if (chrome.runtime && chrome.runtime.getBackgroundPage) {
+          return chrome.runtime.getBackgroundPage(function(page) {
+            return pageHack(page);
+          });
+        }
+      })();
+    }
+  }
+
+  Dropbox.Drivers.Chrome = (function(_super) {
+    __extends(Chrome, _super);
+
+    Chrome.prototype.onMessage = DropboxChromeOnMessage;
+
+    Chrome.prototype.sendMessage = DropboxChromeSendMessage;
+
+    Chrome.prototype.expandUrl = function(url) {
+      if (chrome.runtime && chrome.runtime.getURL) {
+        return chrome.runtime.getURL(url);
+      }
+      if (chrome.extension && chrome.extension.getURL) {
+        return chrome.extension.getURL(url);
+      }
+      return url;
+    };
+
+    function Chrome(options) {
+      var receiverPath, _ref;
+
+      Chrome.__super__.constructor.call(this, options);
+      receiverPath = (options && options.receiverPath) || 'chrome_oauth_receiver.html';
+      this.rememberUser = true;
+      this.useQuery = true;
+      _ref = this.computeUrl(this.expandUrl(receiverPath)), this.receiverUrl = _ref[0], this.receiverUrl2 = _ref[1];
+      this.storageKey = "dropbox_js_" + this.scope + "_credentials";
+    }
+
+    Chrome.prototype.onAuthStateChange = function(client, callback) {
+      var _this = this;
+
+      switch (client.authState) {
+        case Dropbox.Client.RESET:
+          return this.loadCredentials(function(credentials) {
+            if (credentials) {
+              if (credentials.authState) {
+                return _this.forgetCredentials(callback);
+              }
+              client.setCredentials(credentials);
+            }
+            return callback();
+          });
+        case Dropbox.Client.DONE:
+          return this.storeCredentials(client.credentials(), callback);
+        case Dropbox.Client.SIGNED_OFF:
+          return this.forgetCredentials(callback);
+        case Dropbox.Client.ERROR:
+          return this.forgetCredentials(callback);
+        default:
+          return callback();
+      }
+    };
+
+    Chrome.prototype.doAuthorize = function(authUrl, token, tokenSecret, callback) {
+      var window, _ref, _ref1, _ref2,
+        _this = this;
+
+      if ((_ref = chrome.identity) != null ? _ref.launchWebAuthFlow : void 0) {
+        return chrome.identity.launchWebAuthFlow({
+          url: authUrl,
+          interactive: true
+        }, function(redirectUrl) {
+          if (_this.locationToken(redirectUrl) === token) {
+            return callback();
+          }
+        });
+      } else if ((_ref1 = chrome.experimental) != null ? (_ref2 = _ref1.identity) != null ? _ref2.launchWebAuthFlow : void 0 : void 0) {
+        return chrome.experimental.identity.launchWebAuthFlow({
+          url: authUrl,
+          interactive: true
+        }, function(redirectUrl) {
+          if (_this.locationToken(redirectUrl) === token) {
+            return callback();
+          }
+        });
+      } else {
+        window = {
+          handle: null
+        };
+        this.listenForMessage(token, window, callback);
+        return this.openWindow(authUrl, function(handle) {
+          return window.handle = handle;
+        });
+      }
+    };
+
+    Chrome.prototype.openWindow = function(url, callback) {
+      if (chrome.tabs && chrome.tabs.create) {
+        chrome.tabs.create({
+          url: url,
+          active: true,
+          pinned: false
+        }, function(tab) {
+          return callback(tab);
+        });
+        return this;
+      }
+      return this;
+    };
+
+    Chrome.prototype.closeWindow = function(handle) {
+      if (chrome.tabs && chrome.tabs.remove && handle.id) {
+        chrome.tabs.remove(handle.id);
+        return this;
+      }
+      if (chrome.app && chrome.app.window && handle.close) {
+        handle.close();
+        return this;
+      }
+      return this;
+    };
+
+    Chrome.prototype.url = function(token) {
+      return this.receiverUrl + encodeURIComponent(token);
+    };
+
+    Chrome.prototype.listenForMessage = function(token, window, callback) {
+      var listener,
+        _this = this;
+
+      listener = function(message, sender) {
+        if (sender && sender.tab) {
+          if (sender.tab.url.substring(0, _this.receiverUrl.length) !== _this.receiverUrl) {
+            return;
+          }
+        }
+        if (!message.dropbox_oauth_receiver_href) {
+          return;
+        }
+        if (_this.locationToken(message.dropbox_oauth_receiver_href) === token) {
+          if (window.handle) {
+            _this.closeWindow(window.handle);
+          }
+          _this.onMessage.removeListener(listener);
+          return callback();
+        }
+      };
+      return this.onMessage.addListener(listener);
+    };
+
+    Chrome.prototype.storeCredentials = function(credentials, callback) {
+      var items;
+
+      items = {};
+      items[this.storageKey] = credentials;
+      chrome.storage.local.set(items, callback);
+      return this;
+    };
+
+    Chrome.prototype.loadCredentials = function(callback) {
+      var _this = this;
+
+      chrome.storage.local.get(this.storageKey, function(items) {
+        return callback(items[_this.storageKey] || null);
+      });
+      return this;
+    };
+
+    Chrome.prototype.forgetCredentials = function(callback) {
+      chrome.storage.local.remove(this.storageKey, callback);
+      return this;
+    };
+
+    Chrome.oauthReceiver = function() {
+      return window.addEventListener('load', function() {
+        var driver;
+
+        driver = new Dropbox.Drivers.Chrome();
+        driver.sendMessage({
+          dropbox_oauth_receiver_href: window.location.href
+        });
+        if (window.close) {
+          return window.close();
+        }
+      });
+    };
+
+    return Chrome;
+
+  })(Dropbox.Drivers.BrowserBase);
+
+  Dropbox.Drivers.Cordova = (function(_super) {
+    __extends(Cordova, _super);
+
+    function Cordova(options) {
+      this.rememberUser = (options != null ? options.rememberUser : void 0) || false;
+      this.scope = (options != null ? options.scope : void 0) || 'default';
+    }
+
+    Cordova.prototype.doAuthorize = function(authUrl, token, tokenSecret, callback) {
+      var authHost, browser, onEvent, promptPageLoaded;
+
+      browser = window.open(authUrl, '_blank', 'location=yes');
+      promptPageLoaded = false;
+      authHost = /^[^/]*\/\/[^/]*\//.exec(authUrl)[0];
+      onEvent = function(event) {
+        if (event.url === authUrl && promptPageLoaded === false) {
+          promptPageLoaded = true;
+          return;
+        }
+        if (event.url && event.url.substring(0, authHost.length) !== authHost) {
+          promptPageLoaded = false;
+          return;
+        }
+        if (event.type === 'exit' || promptPageLoaded) {
+          browser.removeEventListener('loadstop', onEvent);
+          browser.removeEventListener('exit', onEvent);
+          if (event.type !== 'exit') {
+            browser.close();
+          }
+          return callback();
+        }
+      };
+      browser.addEventListener('loadstop', onEvent);
+      return browser.addEventListener('exit', onEvent);
+    };
+
+    Cordova.prototype.url = function() {
+      return null;
+    };
+
+    Cordova.prototype.onAuthStateChange = function(client, callback) {
+      var superCall,
+        _this = this;
+
+      superCall = (function() {
+        return function() {
+          return Cordova.__super__.onAuthStateChange.call(_this, client, callback);
+        };
+      })();
+      this.setStorageKey(client);
+      if (client.authState === DropboxClient.RESET) {
+        return this.loadCredentials(function(credentials) {
+          if (credentials && credentials.authState) {
+            return _this.forgetCredentials(superCall);
+          } else {
+            return superCall();
+          }
+        });
+      } else {
+        return superCall();
+      }
+    };
+
+    return Cordova;
+
+  })(Dropbox.Drivers.BrowserBase);
+
+  Dropbox.Drivers.NodeServer = (function() {
+    function NodeServer(options) {
+      this.port = (options != null ? options.port : void 0) || 8912;
+      this.faviconFile = (options != null ? options.favicon : void 0) || null;
+      this.fs = require('fs');
+      this.http = require('http');
+      this.open = require('open');
+      this.callbacks = {};
+      this.nodeUrl = require('url');
+      this.createApp();
+    }
+
+    NodeServer.prototype.url = function(token) {
+      return ("http://localhost:" + this.port + "/oauth_callback?dboauth_token=") + encodeURIComponent(token);
+    };
+
+    NodeServer.prototype.doAuthorize = function(authUrl, token, tokenSecret, callback) {
+      this.callbacks[token] = callback;
+      return this.openBrowser(authUrl);
+    };
+
+    NodeServer.prototype.openBrowser = function(url) {
+      if (!url.match(/^https?:\/\//)) {
+        throw new Error("Not a http/https URL: " + url);
+      }
+      if ('BROWSER' in process.env) {
+        return this.open(url, process.env['BROWSER']);
+      } else {
+        return this.open(url);
+      }
+    };
+
+    NodeServer.prototype.createApp = function() {
+      var _this = this;
+
+      this.app = this.http.createServer(function(request, response) {
+        return _this.doRequest(request, response);
+      });
+      return this.app.listen(this.port);
+    };
+
+    NodeServer.prototype.closeServer = function() {
+      return this.app.close();
+    };
+
+    NodeServer.prototype.doRequest = function(request, response) {
+      var data, rejected, token, url,
+        _this = this;
+
+      url = this.nodeUrl.parse(request.url, true);
+      if (url.pathname === '/oauth_callback') {
+        if (url.query.not_approved === 'true') {
+          rejected = true;
+          token = url.query.dboauth_token;
+        } else {
+          rejected = false;
+          token = url.query.oauth_token;
+        }
+        if (this.callbacks[token]) {
+          this.callbacks[token](rejected);
+          delete this.callbacks[token];
+        }
+      }
+      data = '';
+      request.on('data', function(dataFragment) {
+        return data += dataFragment;
+      });
+      return request.on('end', function() {
+        if (_this.faviconFile && (url.pathname === '/favicon.ico')) {
+          return _this.sendFavicon(response);
+        } else {
+          return _this.closeBrowser(response);
+        }
+      });
+    };
+
+    NodeServer.prototype.closeBrowser = function(response) {
+      var closeHtml;
+
+      closeHtml = "<!doctype html>\n<script type=\"text/javascript\">window.close();</script>\n<p>Please close this window.</p>";
+      response.writeHead(200, {
+        'Content-Length': closeHtml.length,
+        'Content-Type': 'text/html'
+      });
+      response.write(closeHtml);
+      return response.end();
+    };
+
+    NodeServer.prototype.sendFavicon = function(response) {
+      return this.fs.readFile(this.faviconFile, function(error, data) {
+        response.writeHead(200, {
+          'Content-Length': data.length,
+          'Content-Type': 'image/x-icon'
+        });
+        response.write(data);
+        return response.end();
+      });
+    };
+
+    return NodeServer;
+
+  })();
+
+  base64HmacSha1 = function(string, key) {
+    return arrayToBase64(hmacSha1(stringToArray(string), stringToArray(key), string.length, key.length));
+  };
+
+  base64Sha1 = function(string) {
+    return arrayToBase64(sha1(stringToArray(string), string.length));
+  };
+
+  if (typeof require !== 'undefined') {
+    try {
+      crypto = require('crypto');
+      if (crypto.createHmac && crypto.createHash) {
+        base64HmacSha1 = function(string, key) {
+          var hmac;
+
+          hmac = crypto.createHmac('sha1', key);
+          hmac.update(string);
+          return hmac.digest('base64');
+        };
+        base64Sha1 = function(string) {
+          var hash;
+
+          hash = crypto.createHash('sha1');
+          hash.update(string);
+          return hash.digest('base64');
+        };
+      }
+    } catch (_error) {
+      requireError = _error;
+    }
+  }
+
+  Dropbox.Util.hmac = base64HmacSha1;
+
+  Dropbox.Util.sha1 = base64Sha1;
+
+  hmacSha1 = function(string, key, length, keyLength) {
+    var hash1, i, ipad, opad;
+
+    if (key.length > 16) {
+      key = sha1(key, keyLength);
+    }
+    ipad = (function() {
+      var _i, _results;
+
+      _results = [];
+      for (i = _i = 0; _i < 16; i = ++_i) {
+        _results.push(key[i] ^ 0x36363636);
+      }
+      return _results;
+    })();
+    opad = (function() {
+      var _i, _results;
+
+      _results = [];
+      for (i = _i = 0; _i < 16; i = ++_i) {
+        _results.push(key[i] ^ 0x5C5C5C5C);
+      }
+      return _results;
+    })();
+    hash1 = sha1(ipad.concat(string), 64 + length);
+    return sha1(opad.concat(hash1), 64 + 20);
+  };
+
+  sha1 = function(string, length) {
+    var a, a0, b, b0, c, c0, d, d0, e, e0, ft, i, j, kt, limit, state, t, _i;
+
+    string[length >> 2] |= 1 << (31 - ((length & 0x03) << 3));
+    string[(((length + 8) >> 6) << 4) + 15] = length << 3;
+    state = Array(80);
+    a = 1732584193;
+    b = -271733879;
+    c = -1732584194;
+    d = 271733878;
+    e = -1009589776;
+    i = 0;
+    limit = string.length;
+    while (i < limit) {
+      a0 = a;
+      b0 = b;
+      c0 = c;
+      d0 = d;
+      e0 = e;
+      for (j = _i = 0; _i < 80; j = ++_i) {
+        if (j < 16) {
+          state[j] = string[i + j];
+        } else {
+          state[j] = rotateLeft32(state[j - 3] ^ state[j - 8] ^ state[j - 14] ^ state[j - 16], 1);
+        }
+        if (j < 20) {
+          ft = (b & c) | ((~b) & d);
+          kt = 1518500249;
+        } else if (j < 40) {
+          ft = b ^ c ^ d;
+          kt = 1859775393;
+        } else if (j < 60) {
+          ft = (b & c) | (b & d) | (c & d);
+          kt = -1894007588;
+        } else {
+          ft = b ^ c ^ d;
+          kt = -899497514;
+        }
+        t = add32(add32(rotateLeft32(a, 5), ft), add32(add32(e, state[j]), kt));
+        e = d;
+        d = c;
+        c = rotateLeft32(b, 30);
+        b = a;
+        a = t;
+      }
+      a = add32(a, a0);
+      b = add32(b, b0);
+      c = add32(c, c0);
+      d = add32(d, d0);
+      e = add32(e, e0);
+      i += 16;
+    }
+    return [a, b, c, d, e];
+  };
+
+  /*
+  # Uncomment the definition below for debugging.
+  #
+  # Returns the hexadecimal representation of a 32-bit number.
+  xxx = (n) ->
+    if n < 0
+      n = (1 << 30) * 4 + n
+    n.toString 16
+  */
+
+
+  rotateLeft32 = function(value, count) {
+    return (value << count) | (value >>> (32 - count));
+  };
+
+  add32 = function(a, b) {
+    var high, low;
+
+    low = (a & 0xFFFF) + (b & 0xFFFF);
+    high = (a >> 16) + (b >> 16) + (low >> 16);
+    return (high << 16) | (low & 0xFFFF);
+  };
+
+  arrayToBase64 = function(array) {
+    var i, i2, limit, string, trit;
+
+    string = "";
+    i = 0;
+    limit = array.length * 4;
+    while (i < limit) {
+      i2 = i;
+      trit = ((array[i2 >> 2] >> ((3 - (i2 & 3)) << 3)) & 0xFF) << 16;
+      i2 += 1;
+      trit |= ((array[i2 >> 2] >> ((3 - (i2 & 3)) << 3)) & 0xFF) << 8;
+      i2 += 1;
+      trit |= (array[i2 >> 2] >> ((3 - (i2 & 3)) << 3)) & 0xFF;
+      string += _base64Digits[(trit >> 18) & 0x3F];
+      string += _base64Digits[(trit >> 12) & 0x3F];
+      i += 1;
+      if (i >= limit) {
+        string += '=';
+      } else {
+        string += _base64Digits[(trit >> 6) & 0x3F];
+      }
+      i += 1;
+      if (i >= limit) {
+        string += '=';
+      } else {
+        string += _base64Digits[trit & 0x3F];
+      }
+      i += 1;
+    }
+    return string;
+  };
+
+  _base64Digits = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+  stringToArray = function(string) {
+    var array, i, mask, _i, _ref;
+
+    array = [];
+    mask = 0xFF;
+    for (i = _i = 0, _ref = string.length; 0 <= _ref ? _i < _ref : _i > _ref; i = 0 <= _ref ? ++_i : --_i) {
+      array[i >> 2] |= (string.charCodeAt(i) & mask) << ((3 - (i & 3)) << 3);
+    }
+    return array;
+  };
+
+  Dropbox.Oauth = (function() {
+    function Oauth(options) {
+      this.key = this.k = null;
+      this.secret = this.s = null;
+      this.token = null;
+      this.tokenSecret = null;
+      this._appHash = null;
+      this.reset(options);
+    }
+
+    Oauth.prototype.reset = function(options) {
+      var k, s, secret, _ref;
+
+      if (options.secret) {
+        this.k = this.key = options.key;
+        this.s = this.secret = options.secret;
+        this._appHash = null;
+      } else if (options.key) {
+        this.key = options.key;
+        this.secret = null;
+        secret = atob(dropboxEncodeKey(this.key).split('|', 2)[1]);
+        _ref = secret.split('?', 2), k = _ref[0], s = _ref[1];
+        this.k = decodeURIComponent(k);
+        this.s = decodeURIComponent(s);
+        this._appHash = null;
+      } else {
+        if (!this.k) {
+          throw new Error('No API key supplied');
+        }
+      }
+      if (options.token) {
+        return this.setToken(options.token, options.tokenSecret);
+      } else {
+        return this.setToken(null, '');
+      }
+    };
+
+    Oauth.prototype.setToken = function(token, tokenSecret) {
+      if (token && (!tokenSecret)) {
+        throw new Error('No secret supplied with the user token');
+      }
+      this.token = token;
+      this.tokenSecret = tokenSecret || '';
+      this.hmacKey = Dropbox.Xhr.urlEncodeValue(this.s) + '&' + Dropbox.Xhr.urlEncodeValue(tokenSecret);
+      return null;
+    };
+
+    Oauth.prototype.authHeader = function(method, url, params) {
+      var header, oauth_params, param, value, _i, _len;
+
+      this.addAuthParams(method, url, params);
+      oauth_params = [];
+      for (param in params) {
+        value = params[param];
+        if (param.substring(0, 6) === 'oauth_') {
+          oauth_params.push(param);
+        }
+      }
+      oauth_params.sort();
+      header = [];
+      for (_i = 0, _len = oauth_params.length; _i < _len; _i++) {
+        param = oauth_params[_i];
+        header.push(Dropbox.Xhr.urlEncodeValue(param) + '="' + Dropbox.Xhr.urlEncodeValue(params[param]) + '"');
+        delete params[param];
+      }
+      return 'OAuth ' + header.join(',');
+    };
+
+    Oauth.prototype.addAuthParams = function(method, url, params) {
+      this.boilerplateParams(params);
+      params.oauth_signature = this.signature(method, url, params);
+      return params;
+    };
+
+    Oauth.prototype.boilerplateParams = function(params) {
+      params.oauth_consumer_key = this.k;
+      params.oauth_nonce = Dropbox.Oauth.nonce();
+      params.oauth_signature_method = 'HMAC-SHA1';
+      if (this.token) {
+        params.oauth_token = this.token;
+      }
+      params.oauth_timestamp = Math.floor(Date.now() / 1000);
+      params.oauth_version = '1.0';
+      return params;
+    };
+
+    Oauth.nonce = function() {
+      return Math.random().toString(36);
+    };
+
+    Oauth.prototype.signature = function(method, url, params) {
+      var string;
+
+      string = method.toUpperCase() + '&' + Dropbox.Xhr.urlEncodeValue(url) + '&' + Dropbox.Xhr.urlEncodeValue(Dropbox.Xhr.urlEncode(params));
+      return base64HmacSha1(string, this.hmacKey);
+    };
+
+    Oauth.prototype.appHash = function() {
+      if (this._appHash) {
+        return this._appHash;
+      }
+      return this._appHash = base64Sha1(this.k).replace(/\=/g, '');
+    };
+
+    return Oauth;
+
+  })();
+
+  if (Date.now == null) {
+    Date.now = function() {
+      return (new Date()).getTime();
+    };
+  }
+
+  dropboxEncodeKey = function(key, secret) {
+    var i, k, result, s, x, y, z, _i, _j, _ref, _ref1, _results;
+
+    if (secret) {
+      secret = [encodeURIComponent(key), encodeURIComponent(secret)].join('?');
+      key = (function() {
+        var _i, _ref, _results;
+
+        _results = [];
+        for (i = _i = 0, _ref = key.length / 2; 0 <= _ref ? _i < _ref : _i > _ref; i = 0 <= _ref ? ++_i : --_i) {
+          _results.push(((key.charCodeAt(i * 2) & 15) * 16) + (key.charCodeAt(i * 2 + 1) & 15));
+        }
+        return _results;
+      })();
+    } else {
+      _ref = key.split('|', 2), key = _ref[0], secret = _ref[1];
+      key = atob(key);
+      key = (function() {
+        var _i, _ref1, _results;
+
+        _results = [];
+        for (i = _i = 0, _ref1 = key.length; 0 <= _ref1 ? _i < _ref1 : _i > _ref1; i = 0 <= _ref1 ? ++_i : --_i) {
+          _results.push(key.charCodeAt(i));
+        }
+        return _results;
+      })();
+      secret = atob(secret);
+    }
+    s = (function() {
+      _results = [];
+      for (_i = 0; _i < 256; _i++){ _results.push(_i); }
+      return _results;
+    }).apply(this);
+    y = 0;
+    for (x = _j = 0; _j < 256; x = ++_j) {
+      y = (y + s[i] + key[x % key.length]) % 256;
+      _ref1 = [s[y], s[x]], s[x] = _ref1[0], s[y] = _ref1[1];
+    }
+    x = y = 0;
+    result = (function() {
+      var _k, _ref2, _ref3, _results1;
+
+      _results1 = [];
+      for (z = _k = 0, _ref2 = secret.length; 0 <= _ref2 ? _k < _ref2 : _k > _ref2; z = 0 <= _ref2 ? ++_k : --_k) {
+        x = (x + 1) % 256;
+        y = (y + s[x]) % 256;
+        _ref3 = [s[y], s[x]], s[x] = _ref3[0], s[y] = _ref3[1];
+        k = s[(s[x] + s[y]) % 256];
+        _results1.push(String.fromCharCode((k ^ secret.charCodeAt(z)) % 256));
+      }
+      return _results1;
+    })();
+    key = (function() {
+      var _k, _ref2, _results1;
+
+      _results1 = [];
+      for (i = _k = 0, _ref2 = key.length; 0 <= _ref2 ? _k < _ref2 : _k > _ref2; i = 0 <= _ref2 ? ++_k : --_k) {
+        _results1.push(String.fromCharCode(key[i]));
+      }
+      return _results1;
+    })();
+    return [btoa(key.join('')), btoa(result.join(''))].join('|');
+  };
+
+  Dropbox.Util.encodeKey = dropboxEncodeKey;
+
+  Dropbox.PulledChanges = (function() {
+    PulledChanges.parse = function(deltaInfo) {
+      if (deltaInfo && typeof deltaInfo === 'object') {
+        return new Dropbox.PulledChanges(deltaInfo);
+      } else {
+        return deltaInfo;
+      }
+    };
+
+    PulledChanges.prototype.blankSlate = void 0;
+
+    PulledChanges.prototype.cursorTag = void 0;
+
+    PulledChanges.prototype.changes = void 0;
+
+    PulledChanges.prototype.shouldPullAgain = void 0;
+
+    PulledChanges.prototype.shouldBackOff = void 0;
+
+    PulledChanges.prototype.cursor = function() {
+      return this.cursorTag;
+    };
+
+    function PulledChanges(deltaInfo) {
+      var entry;
+
+      this.blankSlate = deltaInfo.reset || false;
+      this.cursorTag = deltaInfo.cursor;
+      this.shouldPullAgain = deltaInfo.has_more;
+      this.shouldBackOff = !this.shouldPullAgain;
+      if (deltaInfo.cursor && deltaInfo.cursor.length) {
+        this.changes = (function() {
+          var _i, _len, _ref, _results;
+
+          _ref = deltaInfo.entries;
+          _results = [];
+          for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+            entry = _ref[_i];
+            _results.push(Dropbox.PullChange.parse(entry));
+          }
+          return _results;
+        })();
+      } else {
+        this.changes = [];
+      }
+    }
+
+    return PulledChanges;
+
+  })();
+
+  Dropbox.PullChange = (function() {
+    PullChange.parse = function(entry) {
+      if (entry && typeof entry === 'object') {
+        return new Dropbox.PullChange(entry);
+      } else {
+        return entry;
+      }
+    };
+
+    PullChange.prototype.path = void 0;
+
+    PullChange.prototype.wasRemoved = void 0;
+
+    PullChange.prototype.stat = void 0;
+
+    function PullChange(entry) {
+      this.path = entry[0];
+      this.stat = Dropbox.Stat.parse(entry[1]);
+      if (this.stat) {
+        this.wasRemoved = false;
+      } else {
+        this.stat = null;
+        this.wasRemoved = true;
+      }
+    }
+
+    return PullChange;
+
+  })();
+
+  Dropbox.RangeInfo = (function() {
+    RangeInfo.parse = function(headerValue) {
+      if (typeof headerValue === 'string') {
+        return new Dropbox.RangeInfo(headerValue);
+      } else {
+        return headerValue;
+      }
+    };
+
+    RangeInfo.prototype.start = null;
+
+    RangeInfo.prototype.size = null;
+
+    RangeInfo.prototype.end = null;
+
+    function RangeInfo(headerValue) {
+      var match;
+
+      if (match = /^bytes (\d*)-(\d*)\/(.*)$/.exec(headerValue)) {
+        this.start = parseInt(match[1]);
+        this.end = parseInt(match[2]);
+        if (match[3] === '*') {
+          this.size = null;
+        } else {
+          this.size = parseInt(match[3]);
+        }
+      } else {
+        this.start = 0;
+        this.end = 0;
+        this.size = null;
+      }
+    }
+
+    return RangeInfo;
+
+  })();
+
+  Dropbox.PublicUrl = (function() {
+    PublicUrl.parse = function(urlData, isDirect) {
+      if (urlData && typeof urlData === 'object') {
+        return new Dropbox.PublicUrl(urlData, isDirect);
+      } else {
+        return urlData;
+      }
+    };
+
+    PublicUrl.prototype.url = null;
+
+    PublicUrl.prototype.expiresAt = null;
+
+    PublicUrl.prototype.isDirect = null;
+
+    PublicUrl.prototype.isPreview = null;
+
+    PublicUrl.prototype.json = function() {
+      return this._json || (this._json = {
+        url: this.url,
+        expires: this.expiresAt.toString(),
+        direct: this.isDirect
+      });
+    };
+
+    function PublicUrl(urlData, isDirect) {
+      this.url = urlData.url;
+      this.expiresAt = new Date(Date.parse(urlData.expires));
+      if (isDirect === true) {
+        this.isDirect = true;
+      } else if (isDirect === false) {
+        this.isDirect = false;
+      } else {
+        if ('direct' in urlData) {
+          this.isDirect = urlData.direct;
+        } else {
+          this.isDirect = Date.now() - this.expiresAt <= 86400000;
+        }
+      }
+      this.isPreview = !this.isDirect;
+      this._json = null;
+    }
+
+    return PublicUrl;
+
+  })();
+
+  Dropbox.CopyReference = (function() {
+    CopyReference.parse = function(refData) {
+      if (refData && (typeof refData === 'object' || typeof refData === 'string')) {
+        return new Dropbox.CopyReference(refData);
+      } else {
+        return refData;
+      }
+    };
+
+    CopyReference.prototype.tag = null;
+
+    CopyReference.prototype.expiresAt = null;
+
+    CopyReference.prototype.json = function() {
+      return this._json || (this._json = {
+        copy_ref: this.tag,
+        expires: this.expiresAt.toString()
+      });
+    };
+
+    function CopyReference(refData) {
+      if (typeof refData === 'object') {
+        this.tag = refData.copy_ref;
+        this.expiresAt = new Date(Date.parse(refData.expires));
+        this._json = refData;
+      } else {
+        this.tag = refData;
+        this.expiresAt = new Date(Math.ceil(Date.now() / 1000) * 1000);
+        this._json = null;
+      }
+    }
+
+    return CopyReference;
+
+  })();
+
+  Dropbox.Stat = (function() {
+    Stat.parse = function(metadata) {
+      if (metadata && typeof metadata === 'object') {
+        return new Dropbox.Stat(metadata);
+      } else {
+        return metadata;
+      }
+    };
+
+    Stat.prototype.path = null;
+
+    Stat.prototype.name = null;
+
+    Stat.prototype.inAppFolder = null;
+
+    Stat.prototype.isFolder = null;
+
+    Stat.prototype.isFile = null;
+
+    Stat.prototype.isRemoved = null;
+
+    Stat.prototype.typeIcon = null;
+
+    Stat.prototype.versionTag = null;
+
+    Stat.prototype.mimeType = null;
+
+    Stat.prototype.size = null;
+
+    Stat.prototype.humanSize = null;
+
+    Stat.prototype.hasThumbnail = null;
+
+    Stat.prototype.modifiedAt = null;
+
+    Stat.prototype.clientModifiedAt = null;
+
+    Stat.prototype.json = function() {
+      return this._json;
+    };
+
+    function Stat(metadata) {
+      var lastIndex, nameSlash, _ref, _ref1;
+
+      this._json = metadata;
+      this.path = metadata.path;
+      if (this.path.substring(0, 1) !== '/') {
+        this.path = '/' + this.path;
+      }
+      lastIndex = this.path.length - 1;
+      if (lastIndex >= 0 && this.path.substring(lastIndex) === '/') {
+        this.path = this.path.substring(0, lastIndex);
+      }
+      nameSlash = this.path.lastIndexOf('/');
+      this.name = this.path.substring(nameSlash + 1);
+      this.isFolder = metadata.is_dir || false;
+      this.isFile = !this.isFolder;
+      this.isRemoved = metadata.is_deleted || false;
+      this.typeIcon = metadata.icon;
+      if ((_ref = metadata.modified) != null ? _ref.length : void 0) {
+        this.modifiedAt = new Date(Date.parse(metadata.modified));
+      } else {
+        this.modifiedAt = null;
+      }
+      if ((_ref1 = metadata.client_mtime) != null ? _ref1.length : void 0) {
+        this.clientModifiedAt = new Date(Date.parse(metadata.client_mtime));
+      } else {
+        this.clientModifiedAt = null;
+      }
+      switch (metadata.root) {
+        case 'dropbox':
+          this.inAppFolder = false;
+          break;
+        case 'app_folder':
+          this.inAppFolder = true;
+          break;
+        default:
+          this.inAppFolder = null;
+      }
+      this.size = metadata.bytes || 0;
+      this.humanSize = metadata.size || '';
+      this.hasThumbnail = metadata.thumb_exists || false;
+      if (this.isFolder) {
+        this.versionTag = metadata.hash;
+        this.mimeType = metadata.mime_type || 'inode/directory';
+      } else {
+        this.versionTag = metadata.rev;
+        this.mimeType = metadata.mime_type || 'application/octet-stream';
+      }
+    }
+
+    return Stat;
+
+  })();
+
+  Dropbox.UploadCursor = (function() {
+    UploadCursor.parse = function(cursorData) {
+      if (cursorData && (typeof cursorData === 'object' || typeof cursorData === 'string')) {
+        return new Dropbox.UploadCursor(cursorData);
+      } else {
+        return cursorData;
+      }
+    };
+
+    UploadCursor.prototype.tag = null;
+
+    UploadCursor.prototype.offset = null;
+
+    UploadCursor.prototype.expiresAt = null;
+
+    UploadCursor.prototype.json = function() {
+      return this._json || (this._json = {
+        upload_id: this.tag,
+        offset: this.offset,
+        expires: this.expiresAt.toString()
+      });
+    };
+
+    function UploadCursor(cursorData) {
+      this.replace(cursorData);
+    }
+
+    UploadCursor.prototype.replace = function(cursorData) {
+      if (typeof cursorData === 'object') {
+        this.tag = cursorData.upload_id || null;
+        this.offset = cursorData.offset || 0;
+        this.expiresAt = new Date(Date.parse(cursorData.expires) || Date.now());
+        this._json = cursorData;
+      } else {
+        this.tag = cursorData || null;
+        this.offset = 0;
+        this.expiresAt = new Date(Math.floor(Date.now() / 1000) * 1000);
+        this._json = null;
+      }
+      return this;
+    };
+
+    return UploadCursor;
+
+  })();
+
+  Dropbox.UserInfo = (function() {
+    UserInfo.parse = function(userInfo) {
+      if (userInfo && typeof userInfo === 'object') {
+        return new Dropbox.UserInfo(userInfo);
+      } else {
+        return userInfo;
+      }
+    };
+
+    UserInfo.prototype.name = null;
+
+    UserInfo.prototype.email = null;
+
+    UserInfo.prototype.countryCode = null;
+
+    UserInfo.prototype.uid = null;
+
+    UserInfo.prototype.referralUrl = null;
+
+    UserInfo.prototype.publicAppUrl = null;
+
+    UserInfo.prototype.quota = null;
+
+    UserInfo.prototype.usedQuota = null;
+
+    UserInfo.prototype.privateBytes = null;
+
+    UserInfo.prototype.sharedBytes = null;
+
+    UserInfo.prototype.json = function() {
+      return this._json;
+    };
+
+    function UserInfo(userInfo) {
+      var lastIndex;
+
+      this._json = userInfo;
+      this.name = userInfo.display_name;
+      this.email = userInfo.email;
+      this.countryCode = userInfo.country || null;
+      this.uid = userInfo.uid.toString();
+      if (userInfo.public_app_url) {
+        this.publicAppUrl = userInfo.public_app_url;
+        lastIndex = this.publicAppUrl.length - 1;
+        if (lastIndex >= 0 && this.publicAppUrl.substring(lastIndex) === '/') {
+          this.publicAppUrl = this.publicAppUrl.substring(0, lastIndex);
+        }
+      } else {
+        this.publicAppUrl = null;
+      }
+      this.referralUrl = userInfo.referral_link;
+      this.quota = userInfo.quota_info.quota;
+      this.privateBytes = userInfo.quota_info.normal || 0;
+      this.sharedBytes = userInfo.quota_info.shared || 0;
+      this.usedQuota = this.privateBytes + this.sharedBytes;
+    }
+
+    return UserInfo;
+
+  })();
+
+  if (typeof XMLHttpRequest !== 'undefined' && (typeof window !== 'undefined' || typeof self !== 'undefined') && typeof navigator !== 'undefined' && typeof navigator.userAgent === 'string') {
+    if (typeof XDomainRequest !== 'undefined' && !('withCredentials' in new XMLHttpRequest())) {
+      DropboxXhrRequest = XDomainRequest;
+      DropboxXhrIeMode = true;
+      DropboxXhrCanSendForms = false;
+    } else {
+      DropboxXhrRequest = XMLHttpRequest;
+      DropboxXhrIeMode = false;
+      DropboxXhrCanSendForms = typeof FormData !== 'undefined' && navigator.userAgent.indexOf('Firefox') === -1;
+    }
+    DropboxXhrDoesPreflight = true;
+  } else {
+    DropboxXhrRequest = require('xhr2');
+    DropboxXhrIeMode = false;
+    DropboxXhrCanSendForms = false;
+    DropboxXhrDoesPreflight = false;
+  }
+
+  if (typeof Uint8Array === 'undefined') {
+    DropboxXhrArrayBufferView = null;
+    DropboxXhrWrapBlob = false;
+    DropboxXhrSendArrayBufferView = false;
+  } else {
+    if (Object.getPrototypeOf) {
+      DropboxXhrArrayBufferView = Object.getPrototypeOf(Object.getPrototypeOf(new Uint8Array(0))).constructor;
+    } else if (Object.__proto__) {
+      DropboxXhrArrayBufferView = (new Uint8Array(0)).__proto__.__proto__.constructor;
+    }
+    if (typeof Blob === 'undefined') {
+      DropboxXhrWrapBlob = false;
+      DropboxXhrSendArrayBufferView = true;
+    } else {
+      try {
+        if ((new Blob([new Uint8Array(2)])).size === 2) {
+          DropboxXhrWrapBlob = true;
+          DropboxXhrSendArrayBufferView = true;
+        } else {
+          DropboxXhrSendArrayBufferView = false;
+          DropboxXhrWrapBlob = (new Blob([new ArrayBuffer(2)])).size === 2;
+        }
+      } catch (_error) {
+        blobError = _error;
+        DropboxXhrSendArrayBufferView = false;
+        DropboxXhrWrapBlob = false;
+        if (typeof WebKitBlobBuilder !== 'undefined') {
+          if (navigator.userAgent.indexOf('Android') !== -1) {
+            DropboxXhrCanSendForms = false;
+          }
+        }
+      }
+      if (DropboxXhrArrayBufferView === Object) {
+        DropboxXhrSendArrayBufferView = false;
+      }
+    }
+  }
+
+  Dropbox.Xhr = (function() {
+    Xhr.Request = DropboxXhrRequest;
+
+    Xhr.ieXdr = DropboxXhrIeMode;
+
+    Xhr.canSendForms = DropboxXhrCanSendForms;
+
+    Xhr.doesPreflight = DropboxXhrDoesPreflight;
+
+    Xhr.ArrayBufferView = DropboxXhrArrayBufferView;
+
+    Xhr.sendArrayBufferView = DropboxXhrSendArrayBufferView;
+
+    Xhr.wrapBlob = DropboxXhrWrapBlob;
+
+    function Xhr(method, baseUrl) {
+      this.method = method;
+      this.isGet = this.method === 'GET';
+      this.url = baseUrl;
+      this.wantHeaders = false;
+      this.headers = {};
+      this.params = null;
+      this.body = null;
+      this.preflight = !(this.isGet || (this.method === 'POST'));
+      this.signed = false;
+      this.completed = false;
+      this.responseType = null;
+      this.callback = null;
+      this.xhr = null;
+      this.onError = null;
+    }
+
+    Xhr.prototype.xhr = null;
+
+    Xhr.prototype.onError = null;
+
+    Xhr.prototype.setParams = function(params) {
+      if (this.signed) {
+        throw new Error('setParams called after addOauthParams or addOauthHeader');
+      }
+      if (this.params) {
+        throw new Error('setParams cannot be called twice');
+      }
+      this.params = params;
+      return this;
+    };
+
+    Xhr.prototype.setCallback = function(callback) {
+      this.callback = callback;
+      return this;
+    };
+
+    Xhr.prototype.signWithOauth = function(oauth, cacheFriendly) {
+      if (Dropbox.Xhr.ieXdr) {
+        return this.addOauthParams(oauth);
+      } else if (this.preflight || !Dropbox.Xhr.doesPreflight) {
+        return this.addOauthHeader(oauth);
+      } else {
+        if (this.isGet && cacheFriendly) {
+          return this.addOauthHeader(oauth);
+        } else {
+          return this.addOauthParams(oauth);
+        }
+      }
+    };
+
+    Xhr.prototype.addOauthParams = function(oauth) {
+      if (this.signed) {
+        throw new Error('Request already has an OAuth signature');
+      }
+      this.params || (this.params = {});
+      oauth.addAuthParams(this.method, this.url, this.params);
+      this.signed = true;
+      return this;
+    };
+
+    Xhr.prototype.addOauthHeader = function(oauth) {
+      if (this.signed) {
+        throw new Error('Request already has an OAuth signature');
+      }
+      this.params || (this.params = {});
+      this.signed = true;
+      return this.setHeader('Authorization', oauth.authHeader(this.method, this.url, this.params));
+    };
+
+    Xhr.prototype.setBody = function(body) {
+      if (this.isGet) {
+        throw new Error('setBody cannot be called on GET requests');
+      }
+      if (this.body !== null) {
+        throw new Error('Request already has a body');
+      }
+      if (typeof body === 'string') {
+
+      } else if ((typeof FormData !== 'undefined') && (body instanceof FormData)) {
+
+      } else {
+        this.headers['Content-Type'] = 'application/octet-stream';
+        this.preflight = true;
+      }
+      this.body = body;
+      return this;
+    };
+
+    Xhr.prototype.setResponseType = function(responseType) {
+      this.responseType = responseType;
+      return this;
+    };
+
+    Xhr.prototype.setHeader = function(headerName, value) {
+      var oldValue;
+
+      if (this.headers[headerName]) {
+        oldValue = this.headers[headerName];
+        throw new Error("HTTP header " + headerName + " already set to " + oldValue);
+      }
+      if (headerName === 'Content-Type') {
+        throw new Error('Content-Type is automatically computed based on setBody');
+      }
+      this.preflight = true;
+      this.headers[headerName] = value;
+      return this;
+    };
+
+    Xhr.prototype.reportResponseHeaders = function() {
+      return this.wantHeaders = true;
+    };
+
+    Xhr.prototype.setFileField = function(fieldName, fileName, fileData, contentType) {
+      var blob, boundary, builder, useFormData;
+
+      if (this.body !== null) {
+        throw new Error('Request already has a body');
+      }
+      if (this.isGet) {
+        throw new Error('setFileField cannot be called on GET requests');
+      }
+      if (typeof fileData === 'object') {
+        if (typeof ArrayBuffer !== 'undefined') {
+          if (fileData instanceof ArrayBuffer) {
+            if (Dropbox.Xhr.sendArrayBufferView) {
+              fileData = new Uint8Array(fileData);
+            }
+          } else {
+            if (!Dropbox.Xhr.sendArrayBufferView && fileData.byteOffset === 0 && fileData.buffer instanceof ArrayBuffer) {
+              fileData = fileData.buffer;
+            }
+          }
+        }
+        contentType || (contentType = 'application/octet-stream');
+        try {
+          fileData = new Blob([fileData], {
+            type: contentType
+          });
+        } catch (_error) {
+          blobError = _error;
+          if (window.WebKitBlobBuilder) {
+            builder = new WebKitBlobBuilder;
+            builder.append(fileData);
+            if (blob = builder.getBlob(contentType)) {
+              fileData = blob;
+            }
+          }
+        }
+        if (typeof File !== 'undefined' && fileData instanceof File) {
+          fileData = new Blob([fileData], {
+            type: fileData.type
+          });
+        }
+        useFormData = fileData instanceof Blob;
+      } else {
+        useFormData = false;
+      }
+      if (useFormData) {
+        this.body = new FormData();
+        return this.body.append(fieldName, fileData, fileName);
+      } else {
+        contentType || (contentType = 'application/octet-stream');
+        boundary = this.multipartBoundary();
+        this.headers['Content-Type'] = "multipart/form-data; boundary=" + boundary;
+        return this.body = ['--', boundary, "\r\n", 'Content-Disposition: form-data; name="', fieldName, '"; filename="', fileName, "\"\r\n", 'Content-Type: ', contentType, "\r\n", "Content-Transfer-Encoding: binary\r\n\r\n", fileData, "\r\n", '--', boundary, '--', "\r\n"].join('');
+      }
+    };
+
+    Xhr.prototype.multipartBoundary = function() {
+      return [Date.now().toString(36), Math.random().toString(36)].join('----');
+    };
+
+    Xhr.prototype.paramsToUrl = function() {
+      var queryString;
+
+      if (this.params) {
+        queryString = Dropbox.Xhr.urlEncode(this.params);
+        if (queryString.length !== 0) {
+          this.url = [this.url, '?', queryString].join('');
+        }
+        this.params = null;
+      }
+      return this;
+    };
+
+    Xhr.prototype.paramsToBody = function() {
+      if (this.params) {
+        if (this.body !== null) {
+          throw new Error('Request already has a body');
+        }
+        if (this.isGet) {
+          throw new Error('paramsToBody cannot be called on GET requests');
+        }
+        this.headers['Content-Type'] = 'application/x-www-form-urlencoded';
+        this.body = Dropbox.Xhr.urlEncode(this.params);
+        this.params = null;
+      }
+      return this;
+    };
+
+    Xhr.prototype.prepare = function() {
+      var header, ieXdr, value, _ref,
+        _this = this;
+
+      ieXdr = Dropbox.Xhr.ieXdr;
+      if (this.isGet || this.body !== null || ieXdr) {
+        this.paramsToUrl();
+        if (this.body !== null && typeof this.body === 'string') {
+          this.headers['Content-Type'] = 'text/plain; charset=utf8';
+        }
+      } else {
+        this.paramsToBody();
+      }
+      this.xhr = new Dropbox.Xhr.Request();
+      if (ieXdr) {
+        this.xhr.onload = function() {
+          return _this.onXdrLoad();
+        };
+        this.xhr.onerror = function() {
+          return _this.onXdrError();
+        };
+        this.xhr.ontimeout = function() {
+          return _this.onXdrError();
+        };
+        this.xhr.onprogress = function() {};
+      } else {
+        this.xhr.onreadystatechange = function() {
+          return _this.onReadyStateChange();
+        };
+      }
+      this.xhr.open(this.method, this.url, true);
+      if (!ieXdr) {
+        _ref = this.headers;
+        for (header in _ref) {
+          if (!__hasProp.call(_ref, header)) continue;
+          value = _ref[header];
+          this.xhr.setRequestHeader(header, value);
+        }
+      }
+      if (this.responseType) {
+        if (this.responseType === 'b') {
+          if (this.xhr.overrideMimeType) {
+            this.xhr.overrideMimeType('text/plain; charset=x-user-defined');
+          }
+        } else {
+          this.xhr.responseType = this.responseType;
+        }
+      }
+      return this;
+    };
+
+    Xhr.prototype.send = function(callback) {
+      var body, xhrError;
+
+      this.callback = callback || this.callback;
+      if (this.body !== null) {
+        body = this.body;
+        if (Dropbox.Xhr.sendArrayBufferView) {
+          if (body instanceof ArrayBuffer) {
+            body = new Uint8Array(body);
+          }
+        } else {
+          if (body.byteOffset === 0 && body.buffer instanceof ArrayBuffer) {
+            body = body.buffer;
+          }
+        }
+        try {
+          this.xhr.send(body);
+        } catch (_error) {
+          xhrError = _error;
+          if (!Dropbox.Xhr.sendArrayBufferView && Dropbox.Xhr.wrapBlob) {
+            body = new Blob([body], {
+              type: 'application/octet-stream'
+            });
+            this.xhr.send(body);
+          } else {
+            throw xhrError;
+          }
+        }
+      } else {
+        this.xhr.send();
+      }
+      return this;
+    };
+
+    Xhr.urlEncode = function(object) {
+      var chunks, key, value;
+
+      chunks = [];
+      for (key in object) {
+        value = object[key];
+        chunks.push(this.urlEncodeValue(key) + '=' + this.urlEncodeValue(value));
+      }
+      return chunks.sort().join('&');
+    };
+
+    Xhr.urlEncodeValue = function(object) {
+      return encodeURIComponent(object.toString()).replace(/\!/g, '%21').replace(/'/g, '%27').replace(/\(/g, '%28').replace(/\)/g, '%29').replace(/\*/g, '%2A');
+    };
+
+    Xhr.urlDecode = function(string) {
+      var kvp, result, token, _i, _len, _ref;
+
+      result = {};
+      _ref = string.split('&');
+      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+        token = _ref[_i];
+        kvp = token.split('=');
+        result[decodeURIComponent(kvp[0])] = decodeURIComponent(kvp[1]);
+      }
+      return result;
+    };
+
+    Xhr.prototype.onReadyStateChange = function() {
+      var allHeaders, apiError, bytes, dirtyText, headers, i, jsonError, metadata, metadataJson, text, _i, _ref;
+
+      if (this.xhr.readyState !== 4) {
+        return true;
+      }
+      if (this.completed) {
+        return true;
+      }
+      this.completed = true;
+      if (this.xhr.status < 200 || this.xhr.status >= 300) {
+        apiError = new Dropbox.ApiError(this.xhr, this.method, this.url);
+        if (this.onError) {
+          this.onError(apiError, this.callback);
+        } else {
+          this.callback(apiError);
+        }
+        return true;
+      }
+      if (this.wantHeaders) {
+        allHeaders = this.xhr.getAllResponseHeaders();
+        if (allHeaders) {
+          headers = Dropbox.Xhr.parseResponseHeaders(allHeaders);
+        } else {
+          headers = this.guessResponseHeaders();
+        }
+        metadataJson = headers['x-dropbox-metadata'];
+      } else {
+        headers = void 0;
+        metadataJson = this.xhr.getResponseHeader('x-dropbox-metadata');
+      }
+      if (metadataJson != null ? metadataJson.length : void 0) {
+        try {
+          metadata = JSON.parse(metadataJson);
+        } catch (_error) {
+          jsonError = _error;
+          metadata = void 0;
+        }
+      } else {
+        metadata = void 0;
+      }
+      if (this.responseType) {
+        if (this.responseType === 'b') {
+          dirtyText = this.xhr.responseText != null ? this.xhr.responseText : this.xhr.response;
+          bytes = [];
+          for (i = _i = 0, _ref = dirtyText.length; 0 <= _ref ? _i < _ref : _i > _ref; i = 0 <= _ref ? ++_i : --_i) {
+            bytes.push(String.fromCharCode(dirtyText.charCodeAt(i) & 0xFF));
+          }
+          text = bytes.join('');
+          this.callback(null, text, metadata, headers);
+        } else {
+          this.callback(null, this.xhr.response, metadata, headers);
+        }
+        return true;
+      }
+      text = this.xhr.responseText != null ? this.xhr.responseText : this.xhr.response;
+      switch (this.xhr.getResponseHeader('Content-Type')) {
+        case 'application/x-www-form-urlencoded':
+          this.callback(null, Dropbox.Xhr.urlDecode(text), metadata, headers);
+          break;
+        case 'application/json':
+        case 'text/javascript':
+          this.callback(null, JSON.parse(text), metadata, headers);
+          break;
+        default:
+          this.callback(null, text, metadata, headers);
+      }
+      return true;
+    };
+
+    Xhr.parseResponseHeaders = function(allHeaders) {
+      var colonIndex, headerLines, headers, line, name, value, _i, _len;
+
+      headers = {};
+      headerLines = allHeaders.split("\n");
+      for (_i = 0, _len = headerLines.length; _i < _len; _i++) {
+        line = headerLines[_i];
+        colonIndex = line.indexOf(':');
+        name = line.substring(0, colonIndex).trim().toLowerCase();
+        value = line.substring(colonIndex + 1).trim();
+        headers[name] = value;
+      }
+      return headers;
+    };
+
+    Xhr.prototype.guessResponseHeaders = function() {
+      var headers, name, value, _i, _len, _ref;
+
+      headers = {};
+      _ref = ['cache-control', 'content-language', 'content-range', 'content-type', 'expires', 'last-modified', 'pragma', 'x-dropbox-metadata'];
+      for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+        name = _ref[_i];
+        value = this.xhr.getResponseHeader(name);
+        if (value) {
+          headers[name] = value;
+        }
+      }
+      return headers;
+    };
+
+    Xhr.prototype.onXdrLoad = function() {
+      var headers, metadata, text;
+
+      if (this.completed) {
+        return true;
+      }
+      this.completed = true;
+      text = this.xhr.responseText;
+      if (this.wantHeaders) {
+        headers = {
+          'content-type': this.xhr.contentType
+        };
+      } else {
+        headers = void 0;
+      }
+      metadata = void 0;
+      if (this.responseType) {
+        this.callback(null, text, metadata, headers);
+        return true;
+      }
+      switch (this.xhr.contentType) {
+        case 'application/x-www-form-urlencoded':
+          this.callback(null, Dropbox.Xhr.urlDecode(text), metadata, headers);
+          break;
+        case 'application/json':
+        case 'text/javascript':
+          this.callback(null, JSON.parse(text), metadata, headers);
+          break;
+        default:
+          this.callback(null, text, metadata, headers);
+      }
+      return true;
+    };
+
+    Xhr.prototype.onXdrError = function() {
+      var apiError;
+
+      if (this.completed) {
+        return true;
+      }
+      this.completed = true;
+      apiError = new Dropbox.ApiError(this.xhr, this.method, this.url);
+      if (this.onError) {
+        this.onError(apiError, this.callback);
+      } else {
+        this.callback(apiError);
+      }
+      return true;
+    };
+
+    return Xhr;
+
+  })();
+
+  if (typeof module !== 'undefined' && 'exports' in module) {
+    module.exports = Dropbox;
+  } else if (typeof window !== "undefined" && window !== null) {
+    if (window.Dropbox) {
+      for (name in Dropbox) {
+        if (!__hasProp.call(Dropbox, name)) continue;
+        value = Dropbox[name];
+        window.Dropbox[name] = value;
+      }
+    } else {
+      window.Dropbox = Dropbox;
+    }
+  } else if (typeof self !== "undefined" && self !== null) {
+    self.Dropbox = Dropbox;
+  } else {
+    throw new Error('This library only supports node.js and modern browsers.');
+  }
+
+}).call(this);
\ No newline at end of file
diff --git a/lib/github.js b/lib/github.js
new file mode 100644
index 00000000..f9a1d726
--- /dev/null
+++ b/lib/github.js
@@ -0,0 +1,499 @@
+// Github.js 0.7.0
+// (c) 2012 Michael Aufreiter, Development Seed
+// Github.js is freely distributable under the MIT license.
+// For all details and documentation:
+// http://substance.io/michael/github
+
+(function() {
+  var Github;
+  var API_URL = 'https://api.github.com';
+
+  Github = window.Github = function(options) {
+
+    // HTTP Request Abstraction
+    // =======
+    // 
+    // I'm not proud of this and neither should you be if you were responsible for the XMLHttpRequest spec.
+
+    function _request(method, path, data, cb, raw) {
+      function getURL() {
+        var url = API_URL + path;
+        return url + ((/\?/).test(url) ? "&" : "?") + (new Date()).getTime();
+      }
+
+      var xhr = new XMLHttpRequest();
+      if (!raw) {xhr.dataType = "json";}
+
+      xhr.open(method, getURL());
+      xhr.onreadystatechange = function () {
+        if (this.readyState == 4) {
+          if (this.status >= 200 && this.status < 300 || this.status === 304) {
+            cb(null, raw ? this.responseText : this.responseText ? JSON.parse(this.responseText) : true);
+          } else {
+            cb({request: this, error: this.status});
+          }
+        }
+      };
+      xhr.setRequestHeader('Accept','application/vnd.github.raw');
+      xhr.setRequestHeader('Content-Type','application/json');
+      if (
+         (options.auth == 'oauth' && options.token) ||
+         (options.auth == 'basic' && options.username && options.password)
+         ) {
+           xhr.setRequestHeader('Authorization',options.auth == 'oauth'
+             ? 'token '+ options.token
+             : 'Basic ' + Base64.encode(options.username + ':' + options.password)
+           );
+         }
+      data ? xhr.send(JSON.stringify(data)) : xhr.send();
+    }
+
+    // User API
+    // =======
+
+    Github.User = function() {
+      this.repos = function(cb) {
+        _request("GET", "/user/repos?type=all&per_page=1000&sort=updated", null, function(err, res) {
+          cb(err, res);
+        });
+      };
+
+      // List user organizations
+      // -------
+
+      this.orgs = function(cb) {
+        _request("GET", "/user/orgs", null, function(err, res) {
+          cb(err, res);
+        });
+      };
+
+      // List authenticated user's gists
+      // -------
+
+      this.gists = function(cb) {
+        _request("GET", "/gists", null, function(err, res) {
+          cb(err,res);
+        });
+      };
+
+      // Show user information
+      // -------
+
+      this.show = function(username, cb) {
+        var command = username ? "/users/"+username : "/user";
+
+        _request("GET", command, null, function(err, res) {
+          cb(err, res);
+        });
+      };
+
+      // List user repositories
+      // -------
+
+      this.userRepos = function(username, cb) {
+        _request("GET", "/users/"+username+"/repos?type=all&per_page=1000&sort=updated", null, function(err, res) {
+          cb(err, res);
+        });
+      };
+
+      // List a user's gists
+      // -------
+
+      this.userGists = function(username, cb) {
+        _request("GET", "/users/"+username+"/gists", null, function(err, res) {
+          cb(err,res);
+        });
+      };
+
+      // List organization repositories
+      // -------
+
+      this.orgRepos = function(orgname, cb) {
+        _request("GET", "/orgs/"+orgname+"/repos?type=all&per_page=1000&sort=updated&direction=desc", null, function(err, res) {
+          cb(err, res);
+        });
+      };
+
+      // Follow user
+      // -------
+
+      this.follow = function(username, cb) {
+        _request("PUT", "/user/following/"+username, null, function(err, res) {
+          cb(err, res);
+        });
+      };
+
+      // Unfollow user
+      // -------
+
+      this.unfollow = function(username, cb) {
+        _request("DELETE", "/user/following/"+username, null, function(err, res) {
+          cb(err, res);
+        });
+      };
+    };
+
+
+    // Repository API
+    // =======
+
+    Github.Repository = function(options) {
+      var repo = options.name;
+      var user = options.user;
+      
+      var that = this;
+      var repoPath = "/repos/" + user + "/" + repo;
+
+      var currentTree = {
+        "branch": null,
+        "sha": null
+      };
+
+      // Uses the cache if branch has not been changed
+      // -------
+
+      function updateTree(branch, cb) {
+        if (branch === currentTree.branch && currentTree.sha) return cb(null, currentTree.sha);
+        that.getRef("heads/"+branch, function(err, sha) {
+          currentTree.branch = branch;
+          currentTree.sha = sha;
+          cb(err, sha);
+        });
+      }
+
+      // Get a particular reference
+      // -------
+
+      this.getRef = function(ref, cb) {
+        _request("GET", repoPath + "/git/refs/" + ref, null, function(err, res) {
+          if (err) return cb(err);
+          cb(null, res.object.sha);
+        });
+      };
+
+      // Create a new reference
+      // --------
+      //
+      // {
+      //   "ref": "refs/heads/my-new-branch-name",
+      //   "sha": "827efc6d56897b048c772eb4087f854f46256132"
+      // }
+
+      this.createRef = function(options, cb) {
+        _request("POST", repoPath + "/git/refs", options, cb);
+      };
+
+      // Delete a reference
+      // --------
+      // 
+      // repo.deleteRef('heads/gh-pages')
+      // repo.deleteRef('tags/v1.0')
+
+      this.deleteRef = function(ref, cb) {
+        _request("DELETE", repoPath + "/git/refs/"+ref, options, cb);
+      };
+
+      // List all branches of a repository
+      // -------
+
+      this.listBranches = function(cb) {
+        _request("GET", repoPath + "/git/refs/heads", null, function(err, heads) {
+          if (err) return cb(err);
+          cb(null, _.map(heads, function(head) { return _.last(head.ref.split('/')); }));
+        });
+      };
+
+      // Retrieve the contents of a blob
+      // -------
+
+      this.getBlob = function(sha, cb) {
+        _request("GET", repoPath + "/git/blobs/" + sha, null, cb, 'raw');
+      };
+
+      // For a given file path, get the corresponding sha (blob for files, tree for dirs)
+      // -------
+
+      this.getSha = function(branch, path, cb) {
+        // Just use head if path is empty
+        if (path === "") return that.getRef("heads/"+branch, cb);
+        that.getTree(branch+"?recursive=true", function(err, tree) {
+          var file = _.select(tree, function(file) {
+            return file.path === path;
+          })[0];
+          cb(null, file ? file.sha : null);
+        });
+      };
+
+      // Retrieve the tree a commit points to
+      // -------
+
+      this.getTree = function(tree, cb) {
+        _request("GET", repoPath + "/git/trees/"+tree, null, function(err, res) {
+          if (err) return cb(err);
+          cb(null, res.tree);
+        });
+      };
+
+      // Post a new blob object, getting a blob SHA back
+      // -------
+
+      this.postBlob = function(content, cb) {
+        if (typeof(content) === "string") {
+          content = {
+            "content": content,
+            "encoding": "utf-8"
+          };
+        }
+
+        _request("POST", repoPath + "/git/blobs", content, function(err, res) {
+          if (err) return cb(err);
+          cb(null, res.sha);
+        });
+      };
+
+      // Update an existing tree adding a new blob object getting a tree SHA back
+      // -------
+
+      this.updateTree = function(baseTree, path, blob, cb) {
+        var data = {
+          "base_tree": baseTree,
+          "tree": [
+            {
+              "path": path,
+              "mode": "100644",
+              "type": "blob",
+              "sha": blob
+            }
+          ]
+        };
+        _request("POST", repoPath + "/git/trees", data, function(err, res) {
+          if (err) return cb(err);
+          cb(null, res.sha);
+        });
+      };
+
+      // Post a new tree object having a file path pointer replaced
+      // with a new blob SHA getting a tree SHA back
+      // -------
+
+      this.postTree = function(tree, cb) {
+        _request("POST", repoPath + "/git/trees", { "tree": tree }, function(err, res) {
+          if (err) return cb(err);
+          cb(null, res.sha);
+        });
+      };
+
+      // Create a new commit object with the current commit SHA as the parent
+      // and the new tree SHA, getting a commit SHA back
+      // -------
+
+      this.commit = function(parent, tree, message, cb) {
+        var data = {
+          "message": message,
+          "author": {
+            "name": options.username
+          },
+          "parents": [
+            parent
+          ],
+          "tree": tree
+        };
+
+        _request("POST", repoPath + "/git/commits", data, function(err, res) {
+          currentTree.sha = res.sha; // update latest commit
+          if (err) return cb(err);
+          cb(null, res.sha);
+        });
+      };
+
+      // Update the reference of your head to point to the new commit SHA
+      // -------
+
+      this.updateHead = function(head, commit, cb) {
+        _request("PATCH", repoPath + "/git/refs/heads/" + head, { "sha": commit }, function(err, res) {
+          cb(err);
+        });
+      };
+
+      // Show repository information
+      // -------
+
+      this.show = function(cb) {
+        _request("GET", repoPath, null, cb);
+      };
+
+      // Get contents
+      // --------
+
+      this.contents = function(branch, path, cb) {
+        _request("GET", repoPath + "/contents?ref=" + branch, { path: path }, cb);
+      };
+
+      // Fork repository
+      // -------
+
+      this.fork = function(cb) {
+        _request("POST", repoPath + "/forks", null, cb);
+      };
+
+      // Create pull request
+      // --------
+
+      this.createPullRequest = function(options, cb) {
+        _request("POST", repoPath + "/pulls", options, cb);
+      };
+
+      // Read file at given path
+      // -------
+
+      this.read = function(branch, path, cb) {
+        that.getSha(branch, path, function(err, sha) {
+          if (!sha) return cb("not found", null);
+          that.getBlob(sha, function(err, content) {
+            cb(err, content, sha);
+          });
+        });
+      };
+
+      // Remove a file from the tree
+      // -------
+
+      this.remove = function(branch, path, cb) {
+        updateTree(branch, function(err, latestCommit) {
+          that.getTree(latestCommit+"?recursive=true", function(err, tree) {
+            // Update Tree
+            var newTree = _.reject(tree, function(ref) { return ref.path === path; });
+            _.each(newTree, function(ref) {
+              if (ref.type === "tree") delete ref.sha;
+            });
+
+            that.postTree(newTree, function(err, rootTree) {
+              that.commit(latestCommit, rootTree, 'Deleted '+path , function(err, commit) {
+                that.updateHead(branch, commit, function(err) {
+                  cb(err);
+                });
+              });
+            });
+          });
+        });
+      };
+
+      // Move a file to a new location
+      // -------
+
+      this.move = function(branch, path, newPath, cb) {
+        updateTree(branch, function(err, latestCommit) {
+          that.getTree(latestCommit+"?recursive=true", function(err, tree) {
+            // Update Tree
+            _.each(tree, function(ref) {
+              if (ref.path === path) ref.path = newPath;
+              if (ref.type === "tree") delete ref.sha;
+            });
+
+            that.postTree(tree, function(err, rootTree) {
+              that.commit(latestCommit, rootTree, 'Deleted '+path , function(err, commit) {
+                that.updateHead(branch, commit, function(err) {
+                  cb(err);
+                });
+              });
+            });
+          });
+        });
+      };
+
+      // Write file contents to a given branch and path
+      // -------
+
+      this.write = function(branch, path, content, message, cb) {
+        updateTree(branch, function(err, latestCommit) {
+          if (err) return cb(err);
+          that.postBlob(content, function(err, blob) {
+            if (err) return cb(err);
+            that.updateTree(latestCommit, path, blob, function(err, tree) {
+              if (err) return cb(err);
+              that.commit(latestCommit, tree, message, function(err, commit) {
+                if (err) return cb(err);
+                that.updateHead(branch, commit, cb);
+              });
+            });
+          });
+        });
+      };
+    };
+
+    // Gists API
+    // =======
+
+    Github.Gist = function(options) {
+      var id = options.id;
+      var gistPath = "/gists/"+id;
+
+      // Read the gist
+      // --------
+
+      this.read = function(cb) {
+        _request("GET", gistPath, null, function(err, gist) {
+          cb(err, gist);
+        });
+      };
+
+      // Create the gist
+      // --------
+      // {
+      //  "description": "the description for this gist",
+      //    "public": true,
+      //    "files": {
+      //      "file1.txt": {
+      //        "content": "String file contents"
+      //      }
+      //    }
+      // }
+      
+      this.create = function(options, cb){
+        _request("POST","/gists", options, cb);
+      };
+
+      // Delete the gist
+      // --------
+
+      this.delete = function(cb) {
+        _request("DELETE", gistPath, null, function(err,res) {
+          cb(err,res);
+        });
+      };
+
+      // Fork a gist
+      // --------
+
+      this.fork = function(cb) {
+        _request("POST", gistPath+"/fork", null, function(err,res) {
+          cb(err,res);
+        });
+      };
+
+      // Update a gist with the new stuff
+      // --------
+
+      this.update = function(options, cb) {
+        _request("PATCH", gistPath, options, function(err,res) {
+          cb(err,res);
+        });
+      };
+    };
+
+    // Top Level API
+    // -------
+
+    this.getRepo = function(user, repo) {
+      return new Github.Repository({user: user, name: repo});
+    };
+
+    this.getUser = function() {
+      return new Github.User();
+    };
+
+    this.getGist = function(id) {
+      return new Github.Gist({id: id});
+    };
+  };
+}).call(this);
\ No newline at end of file
