title: Protractor-Cucumber: how to generate HTML report
body: <p>After add line <code>resultJsonOutputFile: 'report.json',</code> to config file and run my test in Webstorm, there is a <code>report.json</code> created but there is no content on it. I don't know what's the reason.</p>
  
  <p>Please help me to expland why my <code>report.json</code> has no content? And how to generate Html report for my test?</p>