Yelp/venv-update — pull request #25 by bukzor (2014-12-23 18:18:17+00:00)
Title: No capfd

Changes:

* Factor out pytest's `capfd` in favor of my `capture_subprocess` function.
* py.test -s output now shows what's going on as it happens
* also lets me show commands that run during test, without screwing
* this allowed me to put pypy support back in without deadlocks
* Ensure that we don't use pip6, virtualenv12 quite yet (patch incoming)