Merge pull request #346 from FriendsOfSymfony/fix/documentation

updated version number so that dev is proper

Author: softwarebycg

composer.json

@@ -45,7 +45,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "2.0.1-dev"
+            "dev-master": "2.0-dev"
         }
     }
 }