title: ABID in Whatsapp URL schemes
body: <p>Yesterday Whatsapp updated their iOS application and released official URL scheme (api hooks).</p>
  
  <p>I wanted to play a little with it and I'm now facing the problem that I don't understand this whole "abid" thing?! Where do I get the contact ID from? And how do I have to use it then?</p>
  
  <p>Thanks in advance :)</p>