Update README.md

Author: BayuDC

README.md

@@ -9,14 +9,20 @@ determine the price to be paid by the customer.
 
 ## ✨ Demo
 
-Web url: https://warnetku.herokuapp.com  
+Web url: https://warnetku.herokuapp.com
+
+I am sorry if the website is slow 😢.
+I used Heroku free dyno for the web and Railway free plan for the database.
+
 You can use the account below for login access
 
 | Username  | Password  | Role   |
 | --------- | --------- | ------ |
 | operator0 | operator0 | Owner  |
 | operator1 | operator1 | Worker |
 
+All data in this demo web are fake data generated by FakerPHP.
+
 ## 📑 Documentation
 
 -   ### Computer