Added a 1.0 branch alias

Author: GrahamCampbell

composer.json

@@ -33,5 +33,10 @@
     },
     "suggest": {
         "psr/log": "Add some log"
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "1.0-dev"
+        }
     }
 }