Update README.md

Author: minhperry

README.md

@@ -5,3 +5,16 @@ This project was generated with [Angular CLI](https://github.com/angular/angular
 ## Development server
 
 Run `ng serve` for a dev server. Navigate to `http://localhost:6969/`. The application will automatically reload if you change any of the source files.
+
+## Development server with Backend
+
+Run `ng build --watch -configuration development`. Then start a Node server with `node --watch dist/server/server.mjs`.
+
+The whole backend and frontend will be served on `http://localhost:4000/`.
+
+### Technologies used
+
+* [Angular 19](https://angular.dev/)
+* [Node.js 22](https://nodejs.org/)
+* [Bootstrap 5](https://getbootstrap.com/)
+* [Gangnam Style](https://www.youtube.com/watch?v=9bZkp7q19f0)