Fixing travis config for deploying to PyPI
Fixing travis config for deploying to PyPI

Trying to make it so builds are only published to PyPI when a new tagged
commit lands on the `master` branch, rather than what it currently does,
which is to deploy any tagged commit on any pull request.

Signed-off-by: Fabrice Normandin <ee438dab901b32439200d6bb23a0e635234ed3f0@gmail.com>

lebrice/SimpleParsing