title: Excluding files from coverage when using Mocha and Istanbul
body: <p>How can I exclude folders and files (by path) from coverage report when using mocha and instanbul?</p>
  
  <p>I want to exclude by a configuration and not </p>
  
  <pre><code>/*istanbul ignore next*/
  </code></pre>
  
  <p>in each file.</p>
  
  <p>(The generated report use by Jenkins)</p>
  
  <p>Thanks,</p>