ddollar/heroku-buildpack-multi — pull request #13 by ryandotsmith (2013-05-12 02:41:30+00:00)
Title: Support .tgz buildpack format

Tools like https://buildkits.herokuapp.com/ store tared & zipped buildpacks in S3 buckets. I propose these changes to buildpack-multi to keep this code in accordance with common builpack practices.

cc: @dpiddy