docs(plugins): added platforms (#1638)

* added platforms

* round 2

* round 3

* Update index.ts

src/@ionic-native/plugins/fcm/index.ts

@@ -28,15 +28,15 @@ export interface NotificationData {
  * import { FCM } from '@ionic-native/fcm';
  *
  * constructor(private fcm: FCM) {}
- * 
+ *
  * ...
- * 
+ *
  * fcm.subscribeToTopic('marketing');
- * 
+ *
  * fcm.getToken().then(token=>{
  *   backend.registerToken(token);
  * })
- * 
+ *
  * fcm.onNotification().subscribe(data=>{
  *   if(data.wasTapped){
  *     console.log("Received in background");
@@ -44,13 +44,13 @@ export interface NotificationData {
  *     console.log("Received in foreground");
  *   };
  * })
- * 
+ *
  * fcm.onTokenRefresh().subscribe(token=>{
  *   backend.registerToken(token);
  * })
- * 
+ *
  * fcm.unsubscribeFromTopic('marketing');
- * 
+ *
  * ```
  * @interfaces
  * NotificationData
@@ -60,14 +60,14 @@ export interface NotificationData {
   plugin: 'cordova-plugin-fcm',
   pluginRef: 'FCMPlugin',
   repo: 'https://github.com/fechanique/cordova-plugin-fcm',
-  platforms: ['iOS', 'Android']
+  platforms: ['Android', 'iOS']
 })
 @Injectable()
 export class FCM extends IonicNativePlugin {
 
   /**
    * Get's device's current registration id
-   * 
+   *
    * @returns {Promise<string>} Returns a Promise that resolves with the registration id token
    */
   @Cordova()
@@ -75,7 +75,7 @@ export class FCM extends IonicNativePlugin {
 
   /**
    * Event firing on the token refresh
-   * 
+   *
    * @returns {Observable<string>} Returns an Observable that notifies with the change of device's registration id
    */
   @Cordova({
@@ -85,9 +85,9 @@ export class FCM extends IonicNativePlugin {
 
   /**
    * Subscribes you to a [topic](https://firebase.google.com/docs/notifications/android/console-topics)
-   * 
+   *
    * @param {string} topic Topic to be subscribed to
-   * 
+   *
    * @returns {Promise<any>} Returns a promise resolving in result of subscribing to a topic
    */
   @Cordova()
@@ -95,9 +95,9 @@ export class FCM extends IonicNativePlugin {
 
   /**
    * Unubscribes you from a [topic](https://firebase.google.com/docs/notifications/android/console-topics)
-   * 
+   *
    * @param {string} topic Topic to be unsubscribed from
-   * 
+   *
    * @returns {Promise<any>} Returns a promise resolving in result of unsubscribing from a topic
    */
   @Cordova()
@@ -105,7 +105,7 @@ export class FCM extends IonicNativePlugin {
 
   /**
    * Watch for incoming notifications
-   * 
+   *
    * @returns {Observable<any>} returns an object with data from the notification
    */
   @Cordova({