I refined the ability of the script that handles the table of contents to detect whether it should have a "Back to Index" link. The previous logic of checking the file name for whether it was index.html doesn't cover cases where the book is renamed, as Spring Data does with its books. So I added a check for the documet type. A type of "book" indicates a stand-alone document, which shouldn't have hthe link.
I built the zip file and added it to the Github repository. I also added more detail about how to use the files to README.md (per a request from Oliver Gierke).
I re-organized the content to match Maven's usual organization. Then I built a pom.xml file and an assembly file (dep.xml) so that Maven will build a zip file of these resources. The zip file ends up in the /target directory.
Jay Bryant