Delete dartiverse-search from the repo and update dart:io documentation to point

sdk/lib/io/io.dart

 // Copyright (c) 2012, the Dart 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.
 
 /**
  * File, socket, HTTP, and other I/O support for server applications.
  *
  * The I/O library is used for Dart server applications,
  * which run on a stand-alone Dart VM from the command line.
  * *This library does not work in browser-based applications.*
@@ skipping 110 matching lines @@
  * The client connects to the WebSocket using the `connect()` method
  * and a URI that uses the Web Socket protocol.
  * The the client can write to the WebSocket with the `add()` method.
  * For example,
  *
  *     WebSocket.connect('ws://127.0.0.1:4040/ws').then((socket) {
  *       socket.add('Hello, World!');
  *     });
  *
  * Check out the
- * [dartiverse_search](https://code.google.com/p/dart/source/browse/branches/bleeding_edge/dart/samples/dartiverse_search)
+ * [dartiverse_search](https://github.com/dart-lang/sample-dartiverse-search)
  * sample for a client/server pair that uses
  * WebSockets to communicate.
  *
  * ## Socket and ServerSocket
  *
  * Clients and servers use [Socket]s to communicate using the TCP protocol.
  * Use [ServerSocket] on the server side and [Socket] on the client.
  * The server creates a listening socket using the `bind()` method and
  * then listens for incoming connections on the socket. For example:
  *
@@ skipping 93 matching lines @@
 part 'process.dart';
 part 'service_object.dart';
 part 'socket.dart';
 part 'stdio.dart';
 part 'string_transformer.dart';
 part 'timer_impl.dart';
 part 'secure_socket.dart';
 part 'secure_server_socket.dart';
 part 'websocket.dart';
 part 'websocket_impl.dart';