I've developed a counterpart to my website software named site_file_lite. It functions exactly like my site_file software, but entirely with text files. Unfortunately, I never finished it or made a stable build, and it had some degree of a learning curve.
http://sourceforge.net/projects/sitefile/
If you want to take a look, feel free. I don't have any documentation, nor do I know how far along this download is.
Once you've put the files on your webserver, you simply drag files and folders into the "files" folder, and it builds the site navigation automatically.