Delete README.md, in favor of README.rst.
Delete README.md, in favor of README.rst.

I meant to `git mv README.md README.rst`, but I accidentally left
off the "git" part, and didn't notice until after I pushed.

I really should probably create a "develop" branch, so I can keep
some of this monkeying around off of master. Oh well, this is fine
for now.

jvs/sourcer