title: :data() selector should be recognized?
body: <p>I am using jquery-1.11.1 and I try to use the :data selector, described on</p>
  
  <p><a href="https://api.jqueryui.com/data-selector/" rel="nofollow">https://api.jqueryui.com/data-selector/</a></p>
  
  <p>trying to find all elements having a certain key like this:</p>
  
  <pre><code>var elements = $(':data(kendoMobileScroller)');
  </code></pre>
  
  <p>but all I get is an error saying:</p>
  
  <blockquote>
    <p>Error: Syntax error, unrecognized expression: unsupported pseudo: data</p>
  </blockquote>
  
  <p>Shouldn´t there be such a selector?</p>