title: When viewDidLoad set textField editable / enable keyboard
body: <p>I have an app with a <code>UITextField</code>. When the containing view appears, I want a keyboard to slide up and begin editing this text field. Not sure how I would go about doing this?</p>
  
  <p>I've tried: </p>
  
  <pre><code>func viewDidLoad {
  textField.editing == true
  textField.selected == true
  </code></pre>