Fix: add babel-polyfill to package.json

Author: RyanCCollins

package.json

@@ -56,6 +56,7 @@
     "actions": "^1.3.0",
     "babel-core": "^6.3.15",
     "babel-loader": "^6.2.0",
+    "babel-polyfill": "latest",
     "babel-preset-es2015": "^6.3.13",
     "babel-preset-react": "^6.3.13",
     "babel-preset-stage-0": "^6.3.13",