title: FloatingActionButton with text instead of image
body: <p>I'm trying to figure out how can be modified FloatingActionButton from android support library. Can it be used with the text instead of image?</p>
  
  <p>Something like this one:</p>
  
  <p><a href="https://i.stack.imgur.com/5K8QI.png" rel="noreferrer"><img src="https://i.stack.imgur.com/5K8QI.png" alt="enter image description here"></a></p>
  
  <p>I see it extends ImageButton so I think not. Am I right?</p>
  
  <p>Is this correct in terms of Material Design in general?</p>