title: Node Express res.set() not working
body: <p>I'm implementing <code>jwt</code> <code>bearer</code> on my app. On my route controller block I have this : </p>
  
  <pre><code>utils.createToken({ email: user.email}, function(token){
      res.set({'Authorization': 'Bearer ' + token});
      res.status(200).json(user);
  })
  </code></pre>
  
  <p>But on the response object there's nothing on the <code>header</code> : 
  <a href="https://i.stack.imgur.com/o9yLH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/o9yLH.png" alt="enter image description here"></a></p>
  
  <p>What did I missed? Thanks.</p>