title: Add two sections in recyclerview android
body: <p>In my application i am using recyclerview to display all contact list.
  I want two section in recyclerview.</p>
  
  <p>Like one section is my application contact list and second section is my phone contact list.</p>
  
  <p><strong>Like this</strong></p>
  
  <p><img src="https://i.stack.imgur.com/F9I95.png" alt="enter image description here"></p>
  
  <p>Is there any method to do it?</p>
  
  <p>Does anybody know how to do it?</p>