pantsbuild/pants — pull request #887 by jsirois (2014-12-21 19:40:00+00:00)
Title: Enable caching in the Travis CI build.

The specs here:
http://docs.travis-ci.com/user/caching

This turns on caching for ~/.pants.d, ~/.ivy2
and the current pants requirements bootstraped in
build-support. To make virtualenv caching work, updates
the virtualenv bootstrap script to use a stable directory name
across virtualenv versions.