Added info on new features

Author: rgantzos

popup.html

@@ -22,6 +22,7 @@ <h3>It's the perfect browser extension for Scratch!</h3>
                 <li>Rounded corners on profile avatars and featured projects</li>
                 <li>Simply find your statistics in "My Stuff"</li>
                 <li>Links to projects in profile comments switch to title</li>
+                <li>Hide sprite watermark in the editor</li>
             </ul>
             <center>
             <h3>As you can see, ScratchTools has a lot to offer, and it's constantly growing.</h3>