Add audacious to SUPPORTED_PLAYERS.
Add VLC to the list of supported players

VLC 2.0 is mpris 2.1 compliant and previous versions
use a different bus name.
Merge branch 'supported-players-vlc' of https://github.com/mirsal/gnome-shell-extension-mpriscontrol into gnome-3.2

Conflicts:
	MprisControl@zdyb.tk/extension.js