Update README.md

Sazal Ahamed · web-flow · commit d41812b24f07 · 2020-12-13T08:13:24.000+06:00
diff --git a/README.md b/README.md
@@ -3,3 +3,6 @@ I made this web pos by using only core PHP, MySQLi & JS for a client at 2017. It
 
 id=admin  
 password=admin
+
+
+https://dorypos.herokuapp.com  (Demo Link)
