title: How to add footnotes to GitHub-flavoured Markdown?
body: <p>I am just trying to add footnotes in <a href="https://gist.github.com/esusatyo/5db087b7d7ddb567675a">my GitHub Gist</a>, but it doesn't work:</p>
  
  <pre><code>Some long sentence. [^footnote]
  
  [^footnote]: Test, [Link](https://google.com).
  </code></pre>
  
  <p>I am following <a href="https://github.com/fletcher/MultiMarkdown/wiki/MultiMarkdown-Syntax-Guide">this guide</a> and I don't think I'm doing anything wrong. Can someone point out my mistake?</p>