title: Mongoose Model#save return value
body: <p>I would like to get the whole document instead of the added item when I do a save().</p>
  
  <pre><code>var newTodo = Todos({
       ID: req.body.ID,
       RuleName: req.body.RuleName
  });
  
  newTodo.save(function (err, todos) {
       if (err) throw err;
       res.send(todos);
  });
  </code></pre>