Update project authors statements to Dartino

tests/coroutine/fiber_join_test.dart

-// Copyright (c) 2014, the Fletch project authors. Please see the AUTHORS file
+// Copyright (c) 2014, 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:fletch';
 
 import 'package:expect/expect.dart';
 
 main() {
   testResult();
   testExit();
@@ skipping 18 matching lines @@
   Expect.equals(87, Fiber.fork(() => Fiber.exit(87)).join());
 
   Function newYielder(value) => () {
     Fiber.yield();
     Fiber.exit(value);
   };
 
   Expect.equals(42, Fiber.fork(newYielder(42)).join());
   Expect.equals(87, Fiber.fork(newYielder(87)).join());
 }