Choose a documentation framework for docs

[canyon289]

Add a documentation framework. The two come to mind are mkdocs and sphinx. Sphinx is the most used but most heavy weight. Ive heard good things about mkdocs

https://www.sphinx-doc.org/en/master/ https://www.mkdocs.org/

[hyosubkim]

I used mkdocs to create this static site for BST: https://hyosubkim.github.io/bayesian-statistics-toolbox/. I basically copied over the content from the README.md to populate the site. Let me know what you think--thanks!

[hyosubkim]

Docs now live here: https://hyosubkim.github.io/bayes-toolbox/