title: Actionbar moving tab indicator
body: <p>I'm using <code>ActionBar</code> of <code>AppCompact</code> with tabs and <code>ViewPager</code>.<br/>
  How can I implement moving (with the fragment) tabs indicator like in Onavo app?<br/>
  I tried to use <code>PagerTitleStrip</code> but didn't succeed.</p>
  
  <p><img src="https://i.stack.imgur.com/r2Hx5.png" alt="enter image description here"></p>