fixed(?) docs

src/lib.rs

@@ -736,6 +736,8 @@ impl Game {
     ///
     ///Run this within the game loop
     ///```
+    ///# use cat_box::Game;
+    ///let game = Game::new("wacky game", 1000, 1000);
     ///# game.run(|ctx| {
     ///     if game.step() >= 1000
     ///     {