docs: update readme

Author: eugenioenko

readme.md

@@ -4,8 +4,6 @@ This is a work in progress of a javascript template parser and renderer
 
 ### > [Try it out in playground!](https://eugenioenko.github.io/kasper-js/live/)
 
-### > [Basic reactive app demo](https://eugenioenko.github.io/kasper-js/live/demo.html)
-
 ## Project goals
 
 > Create a full modern javascript framework