update example

Author: Farioso Fernando

example/.flutter-plugins-dependencies

@@ -1 +1 @@
-{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"flutter_nfc_reader","path":"D:\\\\Documents\\\\Projects\\\\flutter-nfc-reader-Adding-dart-3-support-\\\\","native_build":true,"dependencies":[]}],"android":[{"name":"flutter_nfc_reader","path":"D:\\\\Documents\\\\Projects\\\\flutter-nfc-reader-Adding-dart-3-support-\\\\","native_build":true,"dependencies":[]}],"macos":[],"linux":[],"windows":[],"web":[]},"dependencyGraph":[{"name":"flutter_nfc_reader","dependencies":[]}],"date_created":"2024-01-11 11:44:41.592946","version":"3.16.5"}
+{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"flutter_nfc_reader","path":"D:\\\\Documents\\\\Projects\\\\flutter-nfc-reader-Adding-dart-3-support-\\\\","native_build":true,"dependencies":[]}],"android":[{"name":"flutter_nfc_reader","path":"D:\\\\Documents\\\\Projects\\\\flutter-nfc-reader-Adding-dart-3-support-\\\\","native_build":true,"dependencies":[]}],"macos":[],"linux":[],"windows":[],"web":[]},"dependencyGraph":[{"name":"flutter_nfc_reader","dependencies":[]}],"date_created":"2024-01-11 11:51:57.939917","version":"3.16.5"}

example/lib/main.dart

@@ -7,6 +7,7 @@ class MyApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
+      theme: ThemeData(useMaterial3: true),
       title: 'Material App',
       home: Scaffold(
         appBar: AppBar(