message: Add polyfill.io for IE
diff: @@ -77,6 +77,8 @@ const Html = ({ store, htmlContent }: Props): Element<'html'> => {
  `window.__INITIAL_STATE__=${serialize(store.getState())};`
  }}
  />
  + {/* Allows you to use ES6 features on IE */}
  + <script src="https://cdn.polyfill.io/v2/polyfill.min.js" />
  {_.keys(assets.javascript)
  .reverse() // Reverse the order of scripts for accessing vendor.js first
  .map(script => (
  