update ngMocks dependency.

needs to match angular version.

See: angular/angular.js#6439

Author: jamestalmage

bower.json

@@ -34,7 +34,7 @@
     "firebase": "2.2.x"
   },
   "devDependencies": {
-    "angular-mocks": "~1.3.11",
+    "angular-mocks": "~1.4.6",
     "mockfirebase": "~0.10.1"
   }
 }