Push HAvOC to pypi.python.org

[Pryz]

We want to be able to do : pip install havoc

[filmaj]

Hello, Fil here from Adobe's Open Source Office. I have an adobe account on pypi with credentials. If you have travis set up for this project (probably relies on #1), then I can send a PR with encrypted credentials in the travis.yml, and we could configure travis to push to pypi based on e.g. tags. More info on that here: https://docs.travis-ci.com/user/deployment/pypi/