Bump version to 2.0

manifest.json

@@ -4,7 +4,7 @@
   "name": "Write.as for Chrome",
   "short_name": "Write.as",
   "description": "Publish a thought in seconds.",
-  "version": "1.3",
+  "version": "2.0",
 
   "icons": {
     "16": "icon16.png",