travis-ci/travis-build — pull request #210 by roidrage (2014-02-26 14:40:09+00:00)
Title: Include Travis specific environment variables.

These are currently set in the Linux environment by our
provisioning process. They're missing from Mac though as per
travis-ci/travis-ci#1764 and travis-ci/travis-ci#1769.

As all other environment variables are set in here, makes sense
to include these as well.