Update project authors statements to Dartino

pkg/gpio/sample.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:gpio/gpio.dart';
 
 main(List<String> args) {
   const int led = 4;
   const int button = 17;
 
   // Un-comment calling one of the samples.
@@ skipping 60 matching lines @@
   gpio.setMode(led, Mode.output);
   gpio.setMode(button, Mode.input);
   gpio.setTrigger(button, Trigger.both);
   gpio.setPin(led, !gpio.getPin(button));
   while (true) {
     var value = gpio.waitFor(button, 1000);
     print('Wait timeout');
     gpio.setPin(led, !value);
   }
 }