Added "deprecated" message to removeAfter method (#334)

Co-authored-by: Ivan Palikuca <ivan.palikuca@outlook.com>

README.md

@@ -9,6 +9,9 @@ When your app is opened, there is a brief time while the native app loads Flutte
 
 You can now keep the splash screen up while your app initializes!  No need for a secondary splash screen anymore.  Just use the `preserve` and `remove` methods together to remove the splash screen after your initialization is complete.  See [details below](https://pub.dev/packages/flutter_native_splash#3-set-up-app-initialization-optional).
 
+
+Method `removeAfter` has been deprecated, `remove` method should be used insead.
+
 # Usage
 
 Would you prefer a video tutorial instead?  Check out <a href="https://www.youtube.com/watch?v=dB0dOnc2k10">Johannes Milke's tutorial</a>.

example/pubspec.lock

@@ -96,7 +96,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "2.1.3+1"
+    version: "2.1.4+1"
   flutter_test:
     dependency: "direct dev"
     description: flutter

lib/flutter_native_splash.dart

@@ -13,6 +13,7 @@ import 'package:flutter/widgets.dart';
 class FlutterNativeSplash {
   static const MethodChannel _channel = MethodChannel('flutter_native_splash');
 
+  @Deprecated('This class is deprecated use [remove]')
   static void removeAfter(
     Future<void> Function(BuildContext) initializeFunction,
   ) {

pubspec.yaml

@@ -1,7 +1,7 @@
 name: flutter_native_splash
 description: Customize Flutter's default white native splash screen with
   background color and splash image. Supports dark mode, full screen, and more.
-version: 2.1.3+1
+version: 2.1.4+1
 homepage: https://github.com/jonbhanson/flutter_native_splash
 
 environment: