title: How to send an invite to join a group inside my app?
body: <p>I am working on an app where a user gets a list of people based on a the users search criteria. From the list the user is presented with a list of users currently searching for a group. I want to allow the user the ability to send an invite to a selected user on the list, thus forming a group from anywhere of 2 to 6 users. I am not sure where or what to research to achieve this goal. Also once the invite is sent and the users are in a group I want to have a feature for them to communicate with basic chat functionality.</p>
  
  <p>So what I would like is some advise on what to look into for R&amp;D to provide this functionality on my app. The app will be backed by a hosted MySQL database. </p>
  
  <p><strong>EDIT</strong></p>
  
  <p>Just to clarify a little more this is the basic flow I'm picturing in the app</p>
  
  <ol>
  <li><p>Users sees a list of users and each list item has an invite button</p></li>
  <li><p>The user clicks the invite button</p></li>
  <li><p>The clicked user receives a notification of the invite and is allowed to either accept of decline</p></li>
  <li><p>If ACCEPT the users are put into a group which will be stored on the server</p></li>
  <li><p>Other users will be able to join the group</p></li>
  <li><p>Users in the group can invite other users to the existing group</p></li>
  <li><p>All the users in the group can communicate through a chat private to their group.</p></li>
  </ol>
  
  <p>I just need to know how to get the sending of the  invite and accepting or declining of the invite started. What technologies to use? </p>