Test Ruby 2.1.x [ci skip]
Delete duplicate description content
Use original 0.4.x ActiveRecord dependency, we shouldn't change this
between patch level releases.
Preparing 0.4.x patch level release first
For this release we don't need AR 4+ gemfiles
Use pessimistic dependency requirement
Use gemspec for remaining dependencies
Fix typo in gemspec authors
Add André Medeiros for his help!