title: Check if a user is an admin in a setup function
body: <p>I would like to make a setup function to put my bot up, but it has to be usable ONLY by admins.</p>
  
  
  
  <pre class="lang-js prettyprint-override"><code>if (message.content.startsWith("!setup")) {
    if (message.auther.admin) {
      //my code
    }
  } 
  </code></pre>