Ready for Julython in January.
Remove the old API example from README.
Move all documentens into docs/.
Cleanup requirements files.

Closes #13.
Update .travis.yml.

- Remove Python 2.6
- Add Python 3.3

Closes #15.
Fix a typo.
Remove unittest2.

Closes #14.
Remove Python 2.6 support.

Closes #3.
Rename requirements file.
Update README.
Delete __doc__.