Notes on make release

Make notes on how I want part of the `make release` process to work:
specifically, it builds the gh-pages branch from the manpages.
wip
Working WIP
Working upload-docs target

The HTML documentation can be more easily updated using the `make
upload-docs` target. It's not perfect, and certainly not beautiful, but
it does function.

Things I'd love: make use of the `man/Makefile.am` file instead, make
use of `man_MANS`, allow for `-j` with `build-docs`.