CocoaPods/Specs — pull request #6448 by chrismaddern (2013-12-25 20:02:41+00:00)
Title: [Add] CJMTwitterFollowButton - a simple UIButton-subclass Twitter Follow...

... button which is configured with a handle and will open the users profile in the first discovered installed Twitter app (e.g. Tweetbot, Twitter, Echofon etc..)