Update example code

example/lib/pages/home_page.dart

@@ -2,7 +2,6 @@ import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 
-import 'package:app/universal_ui/universal_ui.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -16,6 +15,7 @@ import 'package:path/path.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:tuple/tuple.dart';
 
+import '../universal_ui/universal_ui.dart';
 import 'read_only_page.dart';
 
 class HomePage extends StatefulWidget {

example/lib/pages/read_only_page.dart

@@ -1,9 +1,9 @@
-import 'package:app/universal_ui/universal_ui.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_quill/widgets/controller.dart';
 import 'package:flutter_quill/widgets/editor.dart';
 
+import '../universal_ui/universal_ui.dart';
 import '../widgets/demo_scaffold.dart';
 
 class ReadOnlyPage extends StatefulWidget {