Since we are now migrating 2 specs to asciidoc, it is apropos that I mention this repository:
This is the start of the YAML book I was writing. It has an asciidoc toolchain, and a nice directory layout. The toolchain was originally handed down to me by Dean Wampler, author of O'Reilly's Scala book. The Scala book was written entirely in this style.
I think all the basic parts to get one started on the spec conversions are there.