Add pyenv plugin
Merge pull request #302 from manojlds/pyenv-plugin

Add pyenv plugin
Add support for opening Mou (http://mouapp.com)
Merge pull request #304 from bobbrez/master

Add support for opening Mou (http://mouapp.com)
Add a Docker plugin

This just sets the `DOCKER_HOST` for OS X users so we don't have to keep
setting it all over the place.
Merge remote-tracking branch 'upstream/master'