Great start ! Very nice.
For docbook, the default maven docbook generation is good to begin with.
I know there is a JBoss docbook thing, but i don't know yet if that integrates seemlessly with maven (probably). Maybe I'll update to that docbook generation later if it has decent maven integration, but that is not high on my priority list right now.
I added doc generation for reference guide. There are still some issues with it (the name of the generated files needs to be changed), but the generated doc is usable.
When the reference guide generation will be ok, we can just copy/paste the build targets to create the tutorials.