title: How to send message from Android app through Viber message
body: <p>I want to write small Android app to send the message through Viber 
  to people whom are listed in my contact list. But I could not find 
  any sample code to do this task. 
  If you know how to do this task.</p>
  
  <p>Please teach me. </p>
  
  <p>Vonbk</p>