Update README to point to new source location (#44)

diff --git a/README.md b/README.md
index a482357..bd6a5ea 100644
--- a/README.md
+++ b/README.md

@@ -1,32 +1 @@
-## Web Socket Handler for Shelf
-
-`shelf_web_socket` is a [Shelf][] handler for establishing [WebSocket][]
-connections. It exposes a single function, [webSocketHandler][], which calls an
-`onConnection` callback with a [WebSocketChannel][] object for every
-connection that's established.
-
-[Shelf]: https://pub.dev/packages/shelf
-
-[WebSocket]: https://tools.ietf.org/html/rfc6455
-
-[webSocketHandler]: https://pub.dev/documentation/shelf_web_socket/latest/shelf_web_socket/webSocketHandler.html
-
-[WebSocketChannel]: https://pub.dev/documentation/web_socket_channel/latest/web_socket_channel/WebSocketChannel-class.html
-
-```dart
-import 'package:shelf/shelf_io.dart' as shelf_io;
-import 'package:shelf_web_socket/shelf_web_socket.dart';
-import 'package:web_socket_channel/web_socket_channel.dart';
-
-void main() {
-  var handler = webSocketHandler((webSocket) {
-    webSocket.stream.listen((message) {
-      webSocket.sink.add("echo $message");
-    });
-  });
-
-  shelf_io.serve(handler, 'localhost', 8080).then((server) {
-    print('Serving at ws://${server.address.host}:${server.port}');
-  });
-}
-```
+This package has moved to https://github.com/dart-lang/shelf/tree/master/pkgs/shelf_web_socket