Update README with offline and privacy details

Added information about offline functionality and data privacy.

Author: CodeTappert

README.md

@@ -52,6 +52,8 @@ By default, the tracker runs on port `8080`. To use a custom port, create a `con
 
 * Then open your web browser and navigate to `http://localhost:8080` (or your specified port) to access the tracker.
 * You can also Ctrl+Click the link in the console to open it directly.
+* The project runs fully offline. No internet connection is required!
+* No data is send to any external host or server. Everything stays on YOUR machine
 
 ## Compilation