tcocca/acts_as_follower — pull request #39 by justinxreese (2014-05-03 16:03:43+00:00)
Title: Uses first_or_create in Follower#follow

Uses first_or_create! instead of deprecated find_or_create. Old way
causes #follow to fail in certain Rails versions

first_or_create is available since Rails 3.2, find_or_create is
deprecated in Rails 4.0