Merge pull request #139 from symfony-cmf/prepare_master_next_version

prepare next version

Author: ElectricMaxxx

composer.json

@@ -34,7 +34,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "2.0-dev"
+            "dev-master": "2.1-dev"
         }
     }
 }