rack/rack — pull request #388 by mkremer (2012-05-13 20:24:56+00:00)
Title: Added Gemfile for easy gem install for rack devs with Bundler

About 1 year ago in issue #144 the topic of including a Gemfile was discussed, and it was eventually closed without merging in the changes offered by @nusco. Bundler however is pretty much a standard tool for Ruby developers nowadays, and I think it may be worth reconsidering.