add message notification

src/app/services/toast.service.ts

@@ -10,9 +10,7 @@ export class ToastService {
 
   constructor(
     public toastController: ToastController,
-    private animationController: AnimationController,
-    private modalController: ModalController,
-    ) { }
+  ) { }
 
   ngOnInit() {}
 
@@ -230,3 +228,6 @@ export class ToastService {
   }
 
 }
+
+
+export const ToastsService = new ToastService(new ToastController())