New Editor's draft v20140218

Hi

A new version of the editor's draft is available.

Dated version: http://dev.w3.org/2011/webrtc/editor/archives/20140218/getusermedia.html
Living document: http://dev.w3.org/2011/webrtc/editor/getusermedia.html

Changes include:
* Make optional constraints a list of ConstraintSets. Make ConstraintSet an object.
* Remove noaccess, move peerIdentity
* Add constraints for sampleRate, sampleSize, and echoCancelation.
* Aligned text in remainder of document with Constrainable changes.
* Removed statements that constraints are not applied to read-only sources

Please review and provide feedback.

Dan Burnett (for the editors)