title: How to use async attribute in script tag in haml?
body: <p>How to add attributes like <code>async</code> or <code>defer</code> in script tag in Haml? I tried to put it on a same line as href, but it does not work.</p>
  
  <pre><code> %a.twitter-share-button{href: "https://twitter.com/share?ref_src=twsrc%5Etfw", data: { url: "http://example.net", show: { count: "false" } } } Tweet
  </code></pre>