refactor: Move App.js to src/App

Author: lucianomlima

index.js

@@ -1,7 +1,5 @@
-/** @format */
-
 import { AppRegistry } from 'react-native';
-import App from './App';
 import { name as appName } from './app.json';
+import App from './src/App';
 
 AppRegistry.registerComponent(appName, () => App);

src/App/__tests__/index.js

@@ -0,0 +1,9 @@
+import React from 'react';
+import renderer from 'react-test-renderer';
+
+import App from '..';
+
+test('should render properly', () => {
+  const tree = renderer.create(<App />).toJSON();
+  expect(tree).toMatchSnapshot();
+});