Update project authors statements to Dartino

tests/fletch_tests/sentence_tests.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 'dart:async' show
     Future;
 
 import 'package:fletchc/src/hub/sentence_parser.dart';
 
 import 'package:expect/expect.dart';
 
@@ skipping 89 matching lines @@
 
   sentence = parseSentence(['help', 'all']);
   print(sentence);
   checkAction('help');
   Expect.isTrue(sentence.prepositions.isEmpty);
   checkTarget(TargetKind.ALL);
   Expect.isNull(sentence.trailing);
 
   return new Future.value();
 }