Update README.md

Author: ducito

README.md

@@ -1,2 +1,27 @@
-# UITextField-move-up-when-keyboard-appear
-UITextField move up when keyboard appears in Swift
+# UITextField move up when keyboard appears in Swift
+
+```Swift
+@IBOutlet weak var emailTextField		: UITextField!
+
+override func viewDidLoad() {
+		super.viewDidLoad()
+		emailTextField.delegate = self
+	}	
+
+func textFieldDidBeginEditing(textField: UITextField) {
+		animateViewMoving(true, moveValue: 200)
+	}
+	func textFieldDidEndEditing(textField: UITextField) {
+		animateViewMoving(false, moveValue: 200)
+	}
+
+	func animateViewMoving (up:Bool, moveValue :CGFloat){
+		let movementDuration:NSTimeInterval = 0.3
+		let movement:CGFloat = ( up ? -moveValue : moveValue)
+		UIView.beginAnimations( "animateView", context: nil)
+		UIView.setAnimationBeginsFromCurrentState(true)
+		UIView.setAnimationDuration(movementDuration )
+		self.view.frame = CGRectOffset(self.view.frame, 0,  movement)
+		UIView.commitAnimations()
+	}
+```