add a link to a working example app

README.md

@@ -7,6 +7,10 @@
 
 PeerJS provides a complete, configurable, and easy-to-use peer-to-peer API built on top of WebRTC, supporting both data channels and media streams.
 
+## Live Example
+
+Here's an example application that uses both media and data connections: https://glitch.com/~peerjs-video. The example also uses its own [PeerServer](https://github.com/peers/peerjs-server).
+
 ## Setup