Add 3.0.x-dev branch

Author: hlecorche

README.md

@@ -2,3 +2,5 @@ EcommitJavascriptBundle
 =======================
 
 [![SensioLabsInsight](https://insight.sensiolabs.com/projects/f8dda865-cc2d-4429-857a-ac572c801b67/big.png)](https://insight.sensiolabs.com/projects/f8dda865-cc2d-4429-857a-ac572c801b67)
+
+**WARNING: This branch is under development. Not use in production. You can use stable versions or 2.5 branch.**

composer.json

@@ -32,7 +32,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "2.5.x-dev"
+            "dev-master": "3.0.x-dev"
         }
     }
 }