Update pip requirements for pyxdg.
Module directory layout changes, with corresponding __init__.py changes.
Fixed (I think) the markdown on the subheader links in the README.md.
Updated the pip requirements file with a note to add a requirement for
whatever python-gnupg ends up being called after it's uploaded to pypi.
Add missing __init__.py file to src/.
Add the storage utility for parsing the config file structure in a more
readable fashion.