Add branch alias for 1.0 development on master

Author: curry684

composer.json

@@ -56,5 +56,10 @@
     "config": {
         "preferred-install": "dist",
         "sort-packages": true
+    },
+    "extra": {
+        "branch-alias": {
+          "dev-master": "1.0-dev"
+        }
     }
 }