Tox-Travis: Integrate Tox and Travis

Tox-Travis is a plugin for Tox that simplifies the setup between Tox and Travis.

Usage

Configure the Python versions to test with in .travis.yml, and install tox-travis with pip:

sudo: false
language: python
python:
  - "2.7"
  - "3.4"
install: pip install tox-travis
script: tox

Tox will only run the py27 or py34 env (or envs that have a factor that matches) as appropriate for the version of Python that is being run by each Travis job.