Cut version 0.0.1b2

Cut version 0.0.1b2

- Improve documentation.
- More work on improving docs.
- Improve docs.
- Add some example code.
- Followup to previous changes in math_utils; have the code use its own len.
- Moving zookeeper.py here caused a dep on kazoo.
- Make markdown look nicer.
- Update README with link to local git repo + previous version.
- Cut version 0.0.1b