Adding Sentry.io

src/pages/404/index.js

@@ -1,4 +1,6 @@
 import '../../style.css';
 import { setupGA } from '../../analytics';
+import { setupRaven } from '../../sentry';
 
+setupRaven();
 setupGA();

src/pages/index/index.js

@@ -6,10 +6,12 @@ import App from '../../components/App';
 import '../../style.css';
 import { setupServiceWorker } from '../../service-worker';
 import { setupGA } from '../../analytics';
+import { setupRaven } from '../../sentry';
 
+setupRaven();
+setupGA();
 if (process.env.NODE_ENV === 'production') {
   setupServiceWorker();
 }
-setupGA();
 
 ReactDOM.render(<App/>, document.getElementById('root'));