Remove unused test files.
Fix bug in which branches show in output
Add versioning
Version bump to 0.1.2
Let Jeweler handle Rakefile. Change GitHub repository.
Regenerate gemspec for version 0.1.2
Reorganize code
Refactor old branch code
Add RSpec
Version bump to 0.1.3
Change output for identifying old branches
Allow user to specify age of branches
Show all merged branches
Version bump to 0.2.0
Regenerate gemspec for version 0.2.0
Update jeweler gem
Fix bug where user could never see merged branches
Version bump to 0.2.1
Regenerate gemspec for version 0.2.1
Change how dependencies get loaded

When a project installed this gem, its dependencies would not be
available. I'm moving the dependencies to the Rakefile instead of the
Gemfile. Per Yehuda Katz
(http://yehudakatz.com/2010/12/16/clarifying-the-roles-of-the-gemspec-and-gemfile/),
I'm also removing the Gemfile.lock from version control.