Re-land "Extend the mDNS package with a native extension used on Mac OS"

pkg/mdns/lib/src/constants.dart

Index: pkg/mdns/lib/src/constants.dart
diff --git a/pkg/mdns/lib/src/constants.dart b/pkg/mdns/lib/src/constants.dart
index cde6fa2b97fb5ce2fa45ab37de73f7c9e9b43ab9..8548abcef9d3c092935e45a822937d10b9393a89 100644
--- a/pkg/mdns/lib/src/constants.dart
+++ b/pkg/mdns/lib/src/constants.dart
@@ -1,6 +1,6 @@
-// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2015, the Fletch 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 file.
+// BSD-style license that can be found in the LICENSE.md file.
 
 library mdns.src.constants;