Documentation workflow

This documentation is created primarily using Markdown, for simplicity, but using Sphinx. As such, index files are in reStructuredText, as are any docstrings.

To regenerate and upload a new documentation version:

cd docs/
make apidocs
make html
ghp-import -n _build/html
git push origin gh-pages

This should become visible at https://go-smart.github.io/glossia.