This feature helped me turn my school website, Blackboard and Slickdeals.com into apps and put them right in my tray. To do this, click the three-dot menu in the top-right corner of your browser and save the URL as a shortcut. To customize your shortcuts, crack open applicationize.me/now and begin to create fancy shortcuts for your tray.
Note: The above comes directly from their article. Click here to read more.