Initial commit, Dart library with example.

Currently the client will create an offer and send the offer over a WS
to the server. This will later be using protobuf to encapsulate the
offer.

The DartVM doesn't allow dart:html to be imported so we cannot use the
dart-poc for the full RTC exchange. At this point I need to research how
to use libjingle.
Merge branch 'master' of github.com:bluecmd/catamaran