title: Send multiple users to same google hangout by link (in new window)
body: <p>I have a submit button on my website.  When it is clicked from "user A" it saves some data to DB and send an "invitation" to "user B" via ajax. (both users are looged in and online at my website)</p>
  
  <p>Now I want open google hangout (in a new window) where both users will join.
  So in fact how can I send both users to the same hangout by just clicking my button from my website.</p>
  
  <p>Is it possible to generate a google hangout url even if nobody have joined it yet?
  If this is not possible, is it possible to send "user A" to google hangout which will open the hangout (now a url should be genrated) and send the url to my website (db) so I can display the link to "user B"?
  I haven't found anything about this in the net, so I hope someone can help me here.</p>
  
  <p>Thank you very much.</p>