Fix file name

src/index.js

@@ -7,7 +7,7 @@ import {Provider} from 'react-redux';
 
 import packageJson from '../package.json';
 
-import App from './App';
+import App from './App.jsx';
 import {setProviderState} from './redux/actions/mount_actions';
 import {setActiveRelease} from './redux/actions/release_version_actions';
 import createAppStore from './redux/store/createAppStore';