Renamed window to mine sweeper

cmd/mine-sweeper/main.go

@@ -14,7 +14,7 @@ func main() {
 	bombPercentage := 20
 
 	ebiten.SetWindowSize(width, height)
-	ebiten.SetWindowTitle("Hello, World!")
+	ebiten.SetWindowTitle("Mine Sweeper 💣")
 	game, err := minesweeper.NewGame(width, height, cellSize, bombPercentage)
 	if err != nil {
 		log.Fatal(err)