MenuItem clash with flutter widget of the same name

[avioli]

Running the examples:

[ +745 ms] ../../../../../../lib/main_window.dart:7:1: Error: 'MenuItem' is imported from both 'package:flutter/src/widgets/platform_menu_bar.dart' and 'package:nativeshell/src/menu.dart'.
  [        ] import 'package:nativeshell/nativeshell.dart';

[avioli]

Fixed the MenuItem issue, but still getting an error. Let me know if you would like a PR for these. Feel free to close.

diff --git a/lib/main.dart b/lib/main.dart
index d98e17f..83dc863 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -1,4 +1,4 @@
-import 'package:flutter/material.dart';
+import 'package:flutter/material.dart' hide MenuItem;
 import 'package:flutter/rendering.dart';
 import 'package:nativeshell/nativeshell.dart';
 
diff --git a/lib/main_window.dart b/lib/main_window.dart
index 16e3f81..a4eab13 100644
--- a/lib/main_window.dart
+++ b/lib/main_window.dart
@@ -1,9 +1,9 @@
 import 'dart:io';
 
-import 'package:flutter/material.dart';
+import 'package:flutter/material.dart' hide MenuItem;
 import 'package:flutter/painting.dart';
 import 'package:flutter/rendering.dart';
-import 'package:flutter/widgets.dart';
+import 'package:flutter/widgets.dart' hide MenuItem;
 import 'package:nativeshell/nativeshell.dart';
 import 'package:nativeshell_examples/pages/flutter_plugins.dart';
 
diff --git a/lib/pages/menu.dart b/lib/pages/menu.dart
index 80621ef..993d4f8 100644
--- a/lib/pages/menu.dart
+++ b/lib/pages/menu.dart
@@ -1,7 +1,7 @@
 import 'dart:async';
 import 'dart:io';
 
-import 'package:flutter/material.dart';
+import 'package:flutter/material.dart' hide MenuItem;
 import 'package:nativeshell/accelerators.dart';
 import 'package:nativeshell/nativeshell.dart';