title: HTML 5 Data attributes without value in HAML
body: <p>How do I do this in HAML when i have HTML 5 Data attributes without value</p>
  
  <pre><code>&lt;p class="title" data-section-title&gt;&lt;a href="#mypanel"&gt;Panel&lt;/a&gt;&lt;/p&gt;
  </code></pre>
  
  <p>I have done this, but HAML raises an error</p>
  
  <pre><code>%p{ class: "title", data: { section: {:title}}}= link_to "Panel", "#mypanel"
  </code></pre>
  
  <p>Thanks</p>