Add Will to the authors

Thanks @willkg for all your help!
Add a __version__

The docs' conf.py wants it, and it's handy to have anyway.
Remove the useage

It's all in the README
Remove usage, add writing_plugins

Also add the project name.
Update the API docs, fix hacking section
Update the way to run subsets of tests
Move and update configuration docs
Replace installation with configuration
Rewrite of the writing_plugins docs
Don't do silly things like repeat a value
Add a dictionary and a redis backend
Add an API conformation test

Generators are fun!
Add logging messages for spam messages

The bayesian classifier will now log certain probabilities for messages
marked as spam. The upshot of this is that now we can piece together why a
message is being marked as spam.
Small fixes

1. Log to a file instead
2. Print the word as opposed to its values
3. Delete a copy paste error
Use a logger and format logging in one go

Also don't log conditionally, log everything.
Fix formatting in report script

This really should have gone in the py26 fixes branch, but I didn't get it done
in time. It's a bunch of really simple formatting errors which differ in
python 2.6 and 2.7.
Logging simplification and flake8  pass
Merge pull request #28 from iankronquist/bayes-logging

Bayes logging
Add @mythmon and @lonnen to AUTHORS.rst

Regardung PR #33
Nix silly typo