Updated branch alias (#140)

* Updated branch alias

* Update composer.json

Author: Nyholm

composer.json

@@ -37,7 +37,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "1.8-dev"
+            "dev-master": "1.9.x-dev"
         }
     }
 }