Update project authors statements to Dartino

tests/pkg/raspberry_pi/raspberry_pi_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 'package:raspberry_pi/raspberry_pi.dart';
 
 main() {
   var raspberry_pi = new RaspberryPi();
 }