Hah, seeing all sorts of weird orthographies I wondered why no one suggested a Georgian orthography. (well, actually, I didn't wonder, but I do so like the squiggly alphabet)
Here's just a list of correspondences. It was fairly simple, however I had to grab Q'ar for y. Of course that was a basically random decision.
Period and comma I think map fairly easily onto Georgian, maybe'd have to use the paragraph-ender punctuation for the period and just the Georgian comma or period for the comma.
http://members.tripod.com/ggdavid/georgia/language/anbani.htm
Feel free to improve (there's plenty of room for improvement- I only know a little Georgian). djin