Update README.md

Author: amitmerchant1990

README.md

@@ -282,6 +282,7 @@ This repository was created with the intention of helping developers master thei
  * 📜 [setTimeout VS setInterval — Develoger](https://develoger.com/settimeout-vs-setinterval-cff85142555b)
  * 📜 [Using requestAnimationFrame — Chris Coyier](https://css-tricks.com/using-requestanimationframe/)
  * 📜 [Understanding JavaScript's requestAnimationFrame() — JavaScript Kit](http://www.javascriptkit.com/javatutors/requestanimationframe.shtml)
+ * 📜 [Handling time intervals in JavaScript](https://www.amitmerchant.com/Handling-Time-Intervals-In-Javascript/)
 
 ### Videos