title: Sorting in Storybook: Possible to force an order for nested stories?
body: <p>My Storybook uses the following grouping for stories:</p>
  <pre><code>Introduction
  Styleguide
  Atoms
    Component
       README
       Examples
    Component
       README
       Examples
  Molecules
    Component
       README
       Examples
  Organisms
    Component
       README
       Examples
  </code></pre>
  <ul>
  <li>Basically three groups: Atoms, Molecules, and Organisms.</li>
  <li>Each group should have alphabetized components. This currently works.</li>
  <li>Each component has a README mdx file, and then all stories nested under Examples.</li>
  </ul>
  <p>I’m currently sorting stories like this:</p>
  <pre class="lang-js prettyprint-override"><code>options: {
      storySort: {
          method: 'alphabetical',
          order: ['Introduction', 'Styleguide', 'Atoms', 'Molecules', 'Organisms'],
          locales: 'en-US',
      }
  },
  </code></pre>
  <p>This gets me <em>close</em>, but the README and Examples within component stories appear in alphabetical order when I want README to appear first.</p>
  <p>Is this possible?</p>