title: Activate emmet in Atom.io
body: <p>I am using a fresh new installation of the atom editor and I just installed emmet.</p>
  
  <p>But when I type e.g.:</p>
  
  <pre><code>div.abcde
  </code></pre>
  
  <p>and press TAB, nothing happen.</p>
  
  <p>Did I forgot something to activate?</p>
  
  <p><img src="https://i.stack.imgur.com/56oNE.jpg" alt="enter image description here"></p>