Updates README to include Fitnesse acknowledgement
Updates README to include Fitnesse acknowledgement

paulstringer/OCSlimProject,ncoelle/Slim-iOS-TestRunner,paulstringer/OCSlimProject,paulstringer/OCSlimProject,paulstringer/OCSlimProject,ncoelle/Slim-iOS-TestRunner,ncoelle/Slim-iOS-TestRunner,ncoelle/Slim-iOS-TestRunner