correct chipBarController reference

Sources/iOS/Base.swift

@@ -34,7 +34,7 @@ class Base: UIControl {
         secondAnimation()
     }
     
-    func didTap() {
+    @objc func didTap() {
         self.isSelected = !self.isSelected
         self.animate()
     }

Sources/iOS/ChipBarController.swift

@@ -45,7 +45,7 @@ extension UIViewController {
      This is the recommended method of accessing the ChipBarController
      through child UIViewControllers.
      */
-    public var chipsController: ChipBarController? {
+    public var chipBarController: ChipBarController? {
         return traverseViewControllerHierarchyForClassType()
     }
 }