Updated webrtc_polyfill.js to use the Mozilla STUN server for Firefox as v22 is not playing nicely with the Google STUN server.
Updated webrtc_polyfill.js to use the Mozilla STUN server for Firefox as v22 is not playing nicely with the Google STUN server.

buildar/getting_started_with_webrtc,jchowit/qklab-nodejs,buildar/getting_started_with_webrtc