This patch sets up an auto-build of documentation based on the current set of markdown files in the repo. The basic workflow (/doc/build.sh) is this:
convert README.md to RST for sphinx
add a (hidden) toctree to link to each of the other markdown files
run sphinx-build to generate the docs
To facilitate this, and make the URLs a little nicer the markdown files under /doc/ were renamed (lowercase) and the links in README.md updated to point directly at the published docs, which will be
