Update project authors statements to Dartino

tests/unsorted/19_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 'package:expect/expect.dart';
 
 class A {
   a([x]) {
     return x;
   }
 }
 
 void main() {
   var a = new A();
   var f = a.a;
   Expect.equals(null, f());
   Expect.equals(2, f(2));
 }