New webrtc-stats editor's draft (v20150203)

Hi all, 

A new dated version of the editor’s draft is available at http://w3c.github.io/webrtc-stats/. 

The main change are:
- Changed RTCStatsType from enum to string as per mailing list discussion. 
- Added “datachannel” to the list of RTCStatsType as per mailing list discussion.
- Updated definitions for bytesSent and bytesReceived as per TPAC14 discussion.
- Added fractionLoss as per TPAC14 discussion.

The updates related to the getstats() in webrtc-pc are pending, a pull request will be made shortly to align the two documents.

-Varun (on behalf of the editors)

—
http://www.netlab.tkk.fi/~varun