Update ios & android folders

Author: Ahmed Elshaabany

template.config.js

@@ -1,6 +1,6 @@
 module.exports = {
     // Placeholder name that will be replaced in package.json, index.json, android/, ios/ for a project name.
-    placeholderName: 'ProjectName',
+    placeholderName: 'HelloWorld',
 
     // Placeholder title that will be replaced in values.xml and Info.plist with title provided by the user.
     // We default this value to 'Hello App Display Name', which is default placeholder in react-native template.

template/index.js

@@ -4,7 +4,6 @@
 
 import {AppRegistry} from 'react-native';
 import App from './src/App';
+import {name as appName} from './app.json';
 
-const APP_NAME = 'ProjectName';
-
-AppRegistry.registerComponent(APP_NAME, () => App);
+AppRegistry.registerComponent(appName, () => App);