Repeat & Speed buttons for Vimeo HTML5 video
Adds 2 buttons to Vimeo's HTML5 video player:
* REPEAT -- for listening good music
* SPEED (playback rate) -- for slow presentations
Set default speed (through extension icon > Options).
Accept comma numbers. Hotkeys - and + for speed.
Added playlist support. Always add buttons always.
+support for embedded vimeo (on player.vimeo.com).
Use onTimeUpdate instead of onEnded, to listen to before-the-end, to make it work in playlists etc.