add events polyfill (3)

Author: kekishida2

js/webpack.config.js

@@ -28,7 +28,8 @@ var resolve = {
         "crypto": require.resolve("crypto-browserify"),
         "buffer": require.resolve("buffer/"),
         "stream": require.resolve("stream-browserify"),
-        "events": require.resolve("events/") 
+        "events": require.resolve("events/"),
+        "vm": require.resolve("vm-browserify")
     }
 };