register service worker

Author: zfletch

src/index.js

@@ -13,4 +13,4 @@ ReactDOM.render(<App />, document.getElementById('root'));
 // If you want your app to work offline and load faster, you can change
 // unregister() to register() below. Note this comes with some pitfalls.
 // Learn more about service workers: http://bit.ly/CRA-PWA
-serviceWorker.unregister();
+serviceWorker.register();