title: Watir-webdriver: get same screenshot images for all failed scenarios
body: <p>I've set screenshots to be taken when a scenario fails, but my html report shows the same screenshot on all failed scenarios. Can anyone help and let me know how I can get unique screenshots taken for each failed scenario.</p>
  
  <p>Here is my code in my env.rb:</p>
  
  <pre><code>After do |scenario|
    if scenario.failed?
       @browser.driver.save_screenshot("screenshot.png")
       embed("screenshot.png", "image/png")
    end   
  </code></pre>