title: Scroll to the bottom of textView programmatically
body: <p>I made a button that adds some text to a textView and I want it to automatically scroll to the bottom as it is pressed so that user would be able to see the new text added.
  <br>I can't use <a href="https://stackoverflow.com/questions/16698638/textview-scroll-textview-to-bottom">this</a> solution in Swift because I don't know Objective-C.
  Does anyone know how can I scroll to the bottom of a textView in Swift? Thanks.</p>