.travis.yml & requirements.txt: copy and fix from Limnoria.

    * Go to https://travis-ci.org/profile and enable this repository.
    * Original contributors can be seen at
        * https://github.com/ProgVal/Limnoria/blob/testing/.travis.yml#blob_contributors_box
        * https://github.com/ProgVal/Limnoria/blob/testing/requirements.txt#blob_contributors_box