title: Import child component package with parent component package
body: <p>I've seen some components used like example below</p>
  
  <pre><code>import Parent from 'Parent';
  
  &lt;Parent.Child/&gt;
  ...or...
  &lt;Parent&gt;
      &lt;Parent.Child/&gt;
  &lt;/Parent&gt;
  </code></pre>
  
  <p>How should I structure the package so that I can do this? Plus what should I call such structure?</p>