update demo link

Author: maor.frankel

README.md

@@ -57,6 +57,7 @@ clear all guides
 */
 ```
 
+
 You can also clear a guide line by double clicking on it or dragging it back to the ruler
 ### Demo
 <a class="jsbin-embed" href="http://jsbin.com/qonababuyu/1/edit?output">JS Bin</a><script src="http://static.jsbin.com/js/embed.js"></script>