Update README.md

Christian Bender · web-flow · commit 95b03a46d8b5 · 2017-12-02T19:01:50.000+01:00
diff --git a/README.md b/README.md
@@ -32,3 +32,9 @@ END PROGRAM
 ```
 
 **You find a guide in GUIDE.md**
+
+### HTML5-Assembler
+
+Here you can interactive play with the assembler language.
+
+[HTML5-Assembler](https://codepen.io/Christian2017/full/BmPzWx/)
