Auto-Generate API Docs (Starter)

[thomasjohns]

We'd likely want to use sphinx.

For this issue, the scope is to document fables.detect() and fables.parse() and have that documentation automatically build into an html page.

[nfmcclure]

For reference and getting started in the documentation, a user should (1) fork/clone the repository, (2) checkout the sphinx branch, (3) change directory to doc, (4) compile make-html: make clean html. Then the resulting html documentation can be found under doc/_build/html/index.html.

To then improve upon the documentation (fill it out more), one can then make changes to specific docstrings in the files and recompile the doc html (step 4 above). And iterate. Once someone has any edits they would like to see, feel free to create a PR! Thanks!