Added an Example Project

So, this calculator app that I have created is bundled with a lot of functionalities and is completely robust. It has functionalities like "plus-minus", "dot" etc.

Author: som-sm

Projects/1-Beginner/Calculator-App.md

@@ -53,6 +53,7 @@ number.
 
 ## Example projects
 
+- [Javascript iOS Style Calculator](https://codepen.io/ssmkhrj/full/jOWBQqO)
 - [Javascript Calculator](https://codepen.io/giana/pen/GJMBEv)
 - [React Calculator](https://codepen.io/mjijackson/pen/xOzyGX)
 - [Javascript-CALC](https://github.com/x0uter/javascript-calc)