title: REST pass multiple id's
body: <p>I mean the next situation <br><br>
  <code>api/users</code> - get all users <br>
  <code>api/users/5</code> - only user with id=5 <br>
  <code>api/users/1,2,7</code> - here we have <code>where_in('user_id', $ids);</code> select in our back-end<br><br>
  I do only one request to server passing list of ids and DB using one select - returns all information that I need.</p>
  
  <p><strong>The main question: is it acceptable using REST this way?</strong> </p>
  
  <p>If we want to get users with ids 1, 2 ,7 do we need one request or three. </p>
  
  <p>Any suggestions.</p>