moved babel-polyfill to prod deps

package.json

@@ -54,7 +54,6 @@
     "babel-core": "^6.26.0",
     "babel-loader": "^7.1.2",
     "babel-plugin-yo-yoify": "^1.0.2",
-    "babel-polyfill": "^6.26.0",
     "babel-preset-env": "^1.6.1",
     "babel-preset-es2015": "^6.24.1",
     "babel-preset-stage-2": "^6.24.1",
@@ -109,6 +108,7 @@
   },
   "dependencies": {
     "aws-sdk": "^2.198.0",
+    "babel-polyfill": "^6.26.0",
     "body-parser": "^1.18.2",
     "choo": "^6.7.0",
     "cldr-core": "^32.0.0",