Lack of clear documentation

[MrNerdy42]

Hello,

I've been using the libpostal python bindings for a while now and it has really helped with database cleansing and the like.

One issue I have, however, is that the only functions which have any documentation or usage examples are parse_address and expand_address. Even this comes from the main libpostal page, and not this page.

By looking at the source code, I can find some sparse documentation on how some of the additional functions work, but having to open source files for reference is tedious and not all of the functions have documentation. Please add some documentation for the rest of the functions provided by this library.

Thanks