salkar/inkwell — pull request #1 by morozovm (2013-01-27 10:11:18+00:00)
Title:  Ignore Gemfile.lock 

"When developing a gem, Do not check your Gemfile.lock into version
control"
http://yehudakatz.com/2010/12/16/clarifying-the-roles-of-the-gemspec-and-gemfile/