update README

Author: nil1729

README.md

@@ -26,6 +26,15 @@ Simple Projects done by me while learning `Vue JS`.
 
 - This site is deployed to `Heroku` and see demo [here](https://mevn-noob-1.herokuapp.com/)
 
+---
+
+#### Task 4 ( Vuetify Calender Components and Data )
+
+- This site is hosted on `Firebase` and see demo [here](https://vue-calender-demo-nil.web.app/)
+- My Timetable data has been used for this demo.
+
+---
+
 ### Setup on Local Enviroment
 
 ```