sstephenson/rbenv-vars — pull request #17 by andyjeffries (2014-02-18 10:25:11+00:00)
Title: If .rbenv-vars isn't present but .env is, use that.

Allows you to use the same file as Foreman (https://github.com/ddollar/foreman), a commonly used tool for developers targeting Heroku (as well as any other environment variable based deployment).