Update project authors statements to Dartino

pkg/power_management/lib/power_management.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.
 
 library power_management;
 
 import 'dart:async';
 
 import 'package:power_management/src/native_extension_api.dart'
     deferred as native_extension_api;
 
@@ skipping 21 matching lines @@
 int disableSleep(String reason) => native_extension_api.disableSleep(reason);
 
 /// Enable sleep again.
 ///
 /// Pass the return value from [disableSleep] as the [disableId]
 /// argument.
 ///
 /// Before using this function the function `initPowerManagement` must
 /// have been called.
 void enableSleep(disableId) => native_extension_api.enableSleep(disableId);