thoughtbot/suspenders — pull request #167 by croaky (2013-03-17 01:23:00+00:00)
Title: Remove Psych from Gemfile

The reason this was here was to resolve an issue with Rubygems, Bundler, and
Psych:

https://github.com/tenderlove/psych/issues/54

The issue has been fixed in Rubygems >= 2.0 and Bundler >= 1.3.0, which we
should all be using now.