Allows the user to make a choice among predefined tags. It should also be the opportunity to create new ones. It can cancel or, validate if at least one choice was made. RRTagController is a subClass of an UIViewController. It's very easy to customize.
only one line of code enough to use it : ```Swift let tag = ["Albanie", "Allemagne", "Andorre", "Autriche-Hongrie", "Belgique", "Bulgarie", "Danemark", "Espagne", "France", "Grèce", "Italie", "Liechtenstein", "Luxembourg", "Monaco", "Monténégro", "Norvège", "Pays-Bas", "Portugal", "Roumanie", "Royaume-Uni", "Russie", "Saint-Marin", "Serbie", "Suède", "Suisse"]
RRTagController.displayTagController(parentController: self, tagsString: tag, blockFinish: { (selectedTags, unSelectedTags) -> () in // the user finished the selection and returns the separated list Selected and not selected. }) { () -> () in // here the user cancel the selection, nothing is returned. }