title: Sequelize update with association
body: <p>In sequelize it's possible to create a row and all it's association in one go like this:</p>
  
  <pre><code>return Product.create({
    title: 'Chair',
    User: {
      first_name: 'Mick',
      last_name: 'Broadstone'
    }
  }, {
    include: [ User ]
  });
  </code></pre>
  
  <p>Is there a equivalent for update? 
  I tried</p>
  
  <pre><code>model.user.update(req.body.user, {where: {id: req.user.user_id}, include: [model.profile]})
  </code></pre>
  
  <p>But it's only updating user</p>
  
  <p>Doing this for create works</p>
  
  <pre><code>model.user.create(user, {transaction: t, include: [model.profile]})
  </code></pre>