add browserify flag back into package

package.json

@@ -60,5 +60,10 @@
     "vinyl-buffer": "^1.0.0",
     "vinyl-source-stream": "^1.1.0",
     "watchify": "^3.7.0"
+  },
+  "browserify": {
+    "transform": [
+      "babelify"
+    ]
   }
 }