Commits on Oct 4, 2016
  1. Travis CI issue identified

    The problem with Travis CI is it uses a very old version of pip when
    testing on python 2.7. Attempted to add a command to upgrade pip first
    before running installation.
    committed Oct 4, 2016
  2. Added a later version of pip requirement

    Hopefully this fixes travis CI
    committed Oct 4, 2016
  3. Attempt to get travis CI working

    Added requirements file and updated travis to make more conservative
    tests.
    committed Oct 4, 2016