Added branch alias to composer.json

Author: ricbra

composer.json

@@ -22,6 +22,9 @@
     "autoload": {
         "psr-0": { "Discogs": "lib/" }
     },
-    "minimum-stability": "dev",
-    "prefer-stable": true
+    "extra": {
+        "branch-alias": {
+            "dev-master": "1.0.x-dev"
+        }
+    }
 }