Currently there is a gap.
WYSIWYG extension is unfortunately not picked up by someone.
you can get it to work by spending 2 days of trying some patches, or by installing an older MW.
I think it is dying at the moment for the following reason:
A new (very cool) editor VE is in development. The disadvantage is that it is not ready yet, and you need to install parsoid. So you need install (apt-get) rights on your server.
They promised a solution for that in a couple of month (from july 2013) but i think the team is somewhat overloaded at the moment, so it might be a bit optimistic. My guess is also that it will be pushed forward, as they have mainly wikipedia in mind.
I would go for VE if possible, else install mw 1.17. and use Extension:WYSIWYG