title: Flutter align button to bottom of Drawer
body: <p>I'm trying to have a Widget align to the bottom of my NavDrawer while still keeping a DrawerHeader and a list at the top of the Drawer. Here's what I'm trying:</p>
  
  <pre><code>drawer: new Drawer(
      child: new Column(
        mainAxisSize: MainAxisSize.max,
        children: &lt;Widget&gt;[
          new Text('Top'),
          new Align(
            alignment: FractionalOffset.bottomCenter,
            child: new Text('Bottom'),
          ),
        ],
      ),
    ),
  </code></pre>
  
  <p>The bottom text should be aligned to the bottom of the drawer, but It isn't!</p>