"You can also use the approach below, which will result in a very nice data table at the top of your markdown when viewing the file GitHub:"

as-object.js

{
	Title: 'My awesome markdown file',
	Author: 'Me',
	Scripts: [
		'js/doStuff.js',
		'js/doMoreStuff.js'
	]
}

meta-marked-github-test.md

Title	Author	Scripts
My awesome markdown file	Me	js/doStuff.js js/doMoreStuff.js

##Header Regular text and stuff goes here.

result-html-snippet.html

<article class="markdown-body entry-content" itemprop="text"><table data-table-type="yaml-metadata">
  <thead>
  <tr>
  <th>Title</th>
  <th>Author</th>
  <th>Scripts</th>
  </tr>
  </thead>
  <tbody>
  <tr>
  <td><div>My awesome markdown file</div></td>
  <td><div>Me</div></td>
  <td><div><table>
  <tbody>
  <tr>
  <td><div>js/doStuff.js</div></td>
  <td><div>js/doMoreStuff.js</div></td>
  </tr>
  </tbody>
</table>
</div></td>
  </tr>
  </tbody>
</table>

<p>##Header
Regular text and stuff goes here.</p>
</article>