Read the pretty version at http://cglab.ca/~abeinges/blah/too-many-lists/book/
Building requires an instance of rustbook be set up on your machine.
The only way to do this correctly is to build Rust from scratch with
./configure --enable-rpath
and steal their copy of rustbook.
Once you have, you just need to do:
rm -rf book/ && rustbook build text/ book/