Added link to live demo, changed screenshot to english

README.md

@@ -2,6 +2,9 @@
 
 A moodle-based training area for maths aiming to prepare students for their studies with the help of AI- and gamification-aspects.
 
+## Live Demo
+[Click here](https://hsbo-clone.ebwl-oer.de/mod/quiz/view.php?id=145) for a live demo.
+
 ## Screenhot
 ![maths training area example question](./img/screenshot.png)