License unedr GNU GPLv3

README.md

@@ -126,3 +126,8 @@ Contains the SQL files used in the *prerequisites* section to create and populat
 ### `model`
 
 Contain simple python classes mapped to relational model. Used in `basic_display.py` to get the code more readable.
+
+## License
+
+GNU GPLv3. See `LICENSE.txt`.
+