made exercise simpler, by only doing some refactoring
removed xcuserdata
removed .gitignore temporarly to delete xcuserdata folders, stupid xcode...
added .gitignore
Added BFHArtist class with log oputput in didLaunch method of app delegate
added icons, launch images and changed display name
removed related BFHArstist releated code from the didLaunch method
changed storyboard with the new navigation controller for the program tab
added BFHProgramViewController to the Navigation Controller
added constraints for table view
added the program detail controller
Merge branch 'master' into exercise.6