Add support for running tests from setup.py.
Add missing __init__.py file.
Add Makefile for running tests and pep8/frosted.
Make sure PEP8 and Frosted passes.
rydberg/gevent-zookeeper -> edgeware/gevent-zookeeper.
Re-add Johan Rydberg as author.

Since this is a public project under Apache License 2.0 I believe we
need some sort of consent.