chore: add licence and fix doc

README.md

@@ -30,20 +30,6 @@ docker-compose up --build
 
 The application will automatically check for available sessions and book them based on your preferences. It will send notifications via email and Telegram when a booking is successful.
 
-### Configuring Preferred Sessions
-
-You can configure your preferred sessions using the `preferred_sessions.json` file. This file should contain a JSON array of session names, for example:
-
-```json
-[
-  "Morning Class",
-  "Evening Class",
-  "Saturday Open Gym"
-]
-```
-
-If the file is not found or contains invalid data, the application will use default hardcoded sessions.
-
 ### Environment Variables
 
 The following environment variables are required:
@@ -82,7 +68,7 @@ You can configure your preferred sessions in the `preferred_sessions.json` file.
 
 The application will automatically load the preferred sessions from this file. If the file is not found or contains invalid data, it will fall back to the default hardcoded sessions.
 
-#### Fields
+### Fields
 
 - `day_of_week`: Integer representing the day of the week (0=Monday, 6=Sunday)
 - `start_time`: String representing the start time in HH:MM format
@@ -119,10 +105,6 @@ The application will automatically load the preferred sessions from this file. I
     └── crossfit_booking.log
 ```
 
-## Contributing
-
-Contributions are welcome! Please open an issue or submit a pull request.
-
 ## License
 
 This project is licensed under the MIT License. See the [LICENSE](LICENSE) file for details.