License project under GPLv3

README.md

@@ -4,7 +4,7 @@ A remake of pong up to 4 players
 
 ![Pong Circle screenshot](icon.png)
 
-# Run
+## Run
 
 You need `SDL1` runtime to run distributable executable.
 
@@ -13,7 +13,7 @@ $ sudo apt install libsdl1.2debian
 $ ./pongcircle
 ```
 
-# Build
+## Build
 
 You need `make` and `SDL1` to build this project.
 
@@ -27,3 +27,8 @@ To execute :
 ```sh
 $ make exec
 ```
+
+## License
+
+GNU GPLv3, see `LICENSE.txt`.
+