ProgVal/Limnoria — pull request #763 by Mkaysi (2014-06-30 12:40:08+00:00)
Title: INSTALL.md & .travis.yml: add `--upgrade` to pip

It upgrades requirements if they are installed, but out-dated. If they
aren't installed, they are installed and if they are installed, but
up-to-date, nothing is done.