Hariken (Founding member, donator, and general good guy) has set up a download bot for our IRC channel. But even if you don't download via IRC, check out the cool site that he set up for it. (The banner at the top scrolls)
A Kamen Rider version is on its way! Look forward to it.
Might be out of date, but here ours tutorial for downloading from IRC. (Note, you cannot download from IRC if you use the mibbit web client.)