Python 3.2 compatibility and support for tox.

Hi Dan,

I have made some final small tweaks to my merge yesterday. I have updated the code to work with Python 3.2 (for the sake of being thorough) and configured the package to work with ``tox``. This works flawlessly for me now and I have run your test suite through via ``tox`` in Python 2.6, 2.7, 3.2 and 3.3 against Django versions 1.3 - 1.5. 

I also attempted Django 1.6Beta4 but due to the re-write on Django 1.6's test runner it fails miserably and so I will need to sort that when I have more time.

Please check it out and let me know what you think or if there is anything else you need me to do to get this merged.

Cheers buddy.
Rob