Update project authors statements to Dartino

pkg/socket/lib/socket.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.
 
 /// Socket access. Only supported when Fletch is running on a Posix platform.
 ///
 /// Reporting issues
 /// ----------------
 /// Please file an issue [in the issue
 /// tracker](https://github.com/dart-lang/fletch/issues/new?title=Add%20title&labels=Area-Package&body=%3Cissue%20description%3E%0A%3Crepro%20steps%3E%0A%3Cexpected%20outcome%3E%0A%3Cactual%20outcome%3E).
 library socket;
@@ skipping 282 matching lines @@
   }
 }
 
 class SocketException implements Exception {
   final String message;
   final int errno;
   SocketException(this.message, this.errno);
 
   String toString() => "SocketException: $message, $errno";
 }