title: How to scroll `UITextView` programmatically when user enters each line?
body: <p>How can I scroll my <code>UITextView</code> programmatically when user enters each line.</p>
  
  <p>It is necessary for my textView since keypad hides it at some point as shown below.
  <img src="https://i.stack.imgur.com/QtDs7.png" alt="enter image description here"></p>
  
  <p>I searched lot, but didn't found any appropriate solution, as I am a newbie to iPhone development. I need your valuable help.</p>