Update README.md

Author: andrehtissot

README.md

@@ -3,7 +3,8 @@
 
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-[![npm version](https://img.shields.io/npm/v/cordova-plugin-fcm-with-dependecy-updated.svg)](https://www.npmjs.com/package/cordova-plugin-fcm-with-dependecy-updated)
+[![npm version](https://img.shields.io/npm/v/cordova-plugin-fcm-with-dependecy-updated.svg)](https://www.npmjs.com/package/cordova-plugin-
+-with-dependecy-updated)
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@@ -286,6 +287,8 @@ import { FCM } from "cordova-plugin-fcm-with-dependecy-updated/ionic/v4";
 
 It brings the same behavior as the native implementation, except for `FCM.onNotification()` and `FCM.onTokenRefresh()`, which gain rxjs' Observable support.
 
+To avoid confusion, it's suggested to also remove the redundant @ionic-native/fcm package.
+
 ##### FCM.onNotification()
 
 Event firing when receiving new notifications.