Update README.md

Author: Unknownplanet40

README.md

@@ -1,2 +1,11 @@
 # Point-Of-Sale-P.O.S-Java-Project
-Fast Food Restaurant P.O.S Project for DCIT 23A
+P.O.S. for a fast food restaurant in DCIT 23A in the second semester of first year
+
+One of our program's features is the ability to enter a user name and display desired menus. You can order in bulk, The program can detect when a category is sold out, calculate the total amount per transaction, calculate the customers change, print a receipt, return items, cancel an order. When a user wants to buy again, there is a 95% chance that at least one item will be unavailable.
+
+# Project Demo
+
+<picture>
+  <source media="(prefers-color-scheme: dark)" srcset="https://github.com/Unknownplanet40/Point-Of-Sale-P.O.S-Java-Project/blob/21f5d99b88956f1091a68d1e601a9196f8e6fc0a/Program%20Demo.gif">
+  <img alt="Project Demo for P.O.S" src="https://github.com/Unknownplanet40/Point-Of-Sale-P.O.S-Java-Project/blob/21f5d99b88956f1091a68d1e601a9196f8e6fc0a/Program%20Demo.gif">
+</picture>