Add tox.ini for Tox (http://tox.testrun.org). MANIFEST.in also required to make sure all needed docs and tests get into the sdist.
Add .travis.yml for Travis CI
Merge pull request #7 from msabramo/tox-and-travis

Add support for Tox (http://tox.testrun.org/) and Travis CI (http://about.travis-ci.org/)