- Add Ruby 2.1 to .travis.yml. - Drop Ruby < 1.9.3 (all end-of-life versions) from .travis.yml. - Make 1.9.3 the minimum required Ruby version. - Make Rails 3.2.0 the minimum required version. - Change the development requirement to Rake 10.3.2 (the current version). - Drop any mentions of Rails 2.x from the README.
Gemfile.lock must not be included in a gem as it needlessly narrows the allowed versions of dependent gems, making the gem very hard to get to work together with other gems. Source: http://yehudakatz.com/2010/12/16/clarifying-the-roles-of-the-gemspec-and-gemfile/ Also add Gemfile.lock to .gitignore.