[xmonad] Gnome3 and xmonad

[Jens Petersen]

> The one in Fedora looks like this:
> -=-
> [GNOME Session]
> Name=Bluetile session
> RequiredComponents=gnome-panel;gnome-settings-daemon;
> RequiredProviders=windowmanager;notifications;
> DefaultProvider-windowmanager=bluetile
> DefaultProvider-notifications=notification-daemon
> -=-

Ok that was the bluetile one, but you get the idea: s/bluetile/xmonad/.