Add tox.ini
.gitignore: Add .tox
tox.ini: Add ipdb to deps, because it's useful for debugging
tox.ini: Add py32 to envs
Merge pull request #103 from msabramo/tox

Add support for testing with tox
Fix html5lib link

html5lib has moved to GitHub, so no point linking to the old site.
Merge pull request #104 from rouge8/patch-1

Fix html5lib link