No longer need to put ruffle stuff in source tree. Made ruffle not use

polyfills also.

build/dev-server.js

@@ -21,6 +21,7 @@ var compiler = webpack(webpackConfig)
 
 var devMiddleware = require('webpack-dev-middleware')(compiler, {
   publicPath: webpackConfig.output.publicPath,
+  writeToDisk: true,
   stats: {
     colors: true,
     chunks: false