Update project authors statements to Dartino

tools/capnp/tests/person.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:math';
 import 'dart:typed_data' show ByteData;
 
 import 'person.capnp.dart';
 import '../lib/message.dart';
 import '../lib/serialize.dart';
 
@@ skipping 53 matching lines @@
     writePerson(children[0], n - 1);
     writePerson(children[1], n - 1);
   }
 }
 
 int countPersons(Person person) {
   int sum = 1;
   for (Person child in person.children) sum += countPersons(child);
   return sum;
 }