Merge pull request #32 from matslindh/pip-readiness

Add PKG-INFO and update README.md

Misc. cleanups and small fixes - Merge pull request #31 from matslind…

…h/small-misc-cleanups

A collection of patches that by themselves are too small to warrant separate pull requests. In general they clean up things that work (and a few that didn't) for better style, clearer intent and future proofing. Each patch has comments related to what (and why) it fixes.

Merge pull request #28 from matslindh/support-imbo-users

Support imbo users

Separates the concepts of 'user' and 'public_key', so that we can make requests based on the 'user' configured in Imbo instead of only the public key.