toxify
matrix is the opposite of global.
Helps to include tox.ini
Merge branch 'master' of github.com:justinabrahms/imhotep into tox

Conflicts:
	.travis.yml
run tox per-env, not all of them.
Take dependency on six for python 2->3 compat
Six as tox dep.
Merge pull request #63 from justinabrahms/tox

Tox