Update project authors statements to Dartino

pkg/power_management/test/disable_enable_test.dart

-// Copyright (c) 2015, the Fletch project authors. Please see the AUTHORS file
+// Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE.md file.
 
 import 'dart:async';
 
 import 'package:power_management/power_management.dart';
 
 main() async {
   await testDisableEnable();
 }
 
 Future testDisableEnable() async {
   await initPowerManagement();
   int id = disableSleep('Some odd reason');
   enableSleep(id);
 }