doc(update): Update TODO. DONE add ranking

README.md

@@ -220,7 +220,7 @@ With these instructions, developers should have no trouble setting up and enjoyi
 - [x] ~~Add new Enemy image generated by Dall-e 3~~
 - [x] ~~Bit refactor of Galaxy~~
 - [x] ~~PowerUps dissapears after 10 seconds (can be adjustable), when arrives to 7, begin flashing.~~
-- [ ] Need urgently a ranking cause my mates are playing and they want to compete!
+- [x] ~~Need urgently a ranking cause my mates are playing and they want to compete!~~
 - [ ] Only 3 enemies can disappear off the left side of the screen. If more than 3 disappear, it signals game over and the game restarts.
 - [ ] Enemies can shoot Puchi.
 - [ ] Puchi has extra lives.
@@ -229,4 +229,4 @@ With these instructions, developers should have no trouble setting up and enjoyi
 - [ ] The escape key should bring up a menu with the options to continue and restart.
 - [ ] Add sprites and effects so that when a ray hits an enemy, it explodes, giving the feeling of a retro-style game explosion.
 - [ ] Add sprites and effects for the shots fired by Puchi giving the feeling of a retro-style game explosion.
-- [ ] Store the best score from played games in the browser's memory and show it on GameOver modal screen.
+