Add more specific timing data to peerconnection sample.

Add enough traces to allow us to accurately determine how long it takes
to set up a call.
Add callbacks for ICE states and other changes useful for determining
timing.
Remove space
Curry callbacks, fix muting bug.
Try this
Doubles to single quotes
And that's why you always test your merge resolves
Merge pull request #19 from juberti/pc1

Add more specific timing data to peerconnection sample.