Check it out, and get your mapping on! :)
I'm also delighted to announce that this is the first Rails Kit authored by someone other than me! Jacques Crocker has done all the heavy lifting on this one, and he's done a bang-up job. Jacques was one of the first customers for the SaaS Rails Kit, so it's been doubly enjoyable to work with him on this Kit.
If you'd like to publish a Kit at Rails Kits, feel free to get in touch. Or, if you just have an idea for Kit, and you'd like me to build it, let me know about that, too. :)