title: How to exit protractor when done
body: <p>When I run <a href="https://github.com/mllrsohn/gulp-protractor" rel="nofollow">gulp-protractor</a> it runs my tests fine but when done it doesn't exit</p>
  
  <pre><code>8 specs, 0 failures
  Finished in 14.874 seconds
  [launcher] 0 instance(s) of WebDriver still running
  [launcher] chrome #1 passed
  [14:40:57] Finished 'test:e2e' after 16 s
  </code></pre>
  
  <p>When done, I have to hit <code>ctrl + c</code> to continue. Is it possible to tell protractor to quit when done ?</p>