Update project authors statements to Dartino

pkg/flash_sd_card/test/image_download_test.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';
 import 'dart:io';
 
 import 'package:expect/expect.dart';
 import 'package:flash_sd_card/src/context.dart';
 import 'package:flash_sd_card/src/platform_service.dart';
 
@@ skipping 77 matching lines @@
     Expect.isTrue(output.indexOf('Failed') > 0);
     Expect.isTrue(output.indexOf('Retrying in 0 seconds') > 0);
     Expect.equals(-1, output.indexOf('DONE'));
 
     await server.close();
     await server.done;
     await ctx.done();
     await env.close();
   }
 }