title: Is it possible to define default value in Sequelize migration?
body: <p>There is no documentation details about addColumn options, so I'm trying this:</p>
  
  <pre><code>queryInterface.addColumn('OrderBackups', 'my_column', Sequelize.INTEGER, { defaultValue: 0 })
  </code></pre>
  
  <p>and it does not work.
  ps: I'm using postgres</p>