http://stackoverflow.com/questions/26374380/afnetworking-h-file-not-found-in-pch-file
Product -> Scheme > Manage Scheme > Select project scheme and press - button. Then press + button to add project scheme > Clean > Build
http://stackoverflow.com/questions/26374380/afnetworking-h-file-not-found-in-pch-file
Product -> Scheme > Manage Scheme > Select project scheme and press - button. Then press + button to add project scheme > Clean > Build