[Media] MAUR editor's draft updated

I have updated the editor's draft to reflect the changes we agreed upon
during today's meeting.  It is available via github at
http://w3c.github.io/pfwg/media-accessibility-reqs/

I can produce a static version with diff marks from the last publication if
anyone finds that compelling.

-Shane


-- 
Shane McCarron
Managing Director, Applied Testing and Technology, Inc.