PersonsViewController.swift

class PersonsViewController: UITableViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // Configure the navigation bar
        navigationItem.rightBarButtonItems = [
            UIBarButtonItem(
                barButtonSystemItem: .Add,
                target: self,
                action: #selector(PersonsViewController.addPerson(_:))),
            editButtonItem()
        ]
        
        ...
    }
}