fix example

Examples/simple-fcm-client/app/App.js

@@ -30,6 +30,7 @@ export default class App extends Component {
 
   showLocalNotification() {
     FCM.presentLocalNotification({
+      vibrate: 500,
       title: 'Hello',
       body: 'Test Notification',
       priority: "high",

Examples/simple-fcm-client/app/PushController.js

@@ -19,9 +19,11 @@ export default class PushController extends Component {
       this.props.onChangeToken(token);
     });
 
+    if(Platform.OS === 'ios'){
       FCM.getAPNSToken().then(token => {
         console.log("APNS TOKEN (getFCMToken)", token);
       });
+    }
 
     FCM.getInitialNotification().then(notif => {
       console.log("INITIAL NOTIFICATION", notif)