Update the RTCPeerConnection interface to the new RTCOfferOptions.
Merge pull request #134 from freedomjs/bemasc-rtcofferoptions

Update the RTCPeerConnection interface to the new RTCOfferOptions.
Fix updateIce signature
Merge pull request #135 from freedomjs/bemasc-updateice

Fix updateIce signature
Some experiments with the chat code, and a start of Paxos