jim/carmen — pull request #132 by joshuapinter (2013-11-09 08:35:24+00:00)
Title: Fixes #131 by allowing nil code to be passed to querying.rb

Multiple people, including myself were running into this error when following the carmen-rails how-to guide. After reviewing the code, I think handling a nil `code` in the querying.rb file is the best solution.