title: mongooseJS returning an object after update?
body: <p>Is it possible to return a document after updating it?</p>
  
  <p>my current code looks something like this:</p>
  
  <pre><code>module.exports.updateEmail = function(id, data, callback) {
      User.findByIdAndUpdate( id, {
          $set: { "email": email }
      }, callback);
  }
  </code></pre>
  
  <p>how would I pull the User document and pass it back?</p>