update version value

Author: exch-bms2

src/bms/player/beatoraja/MainController.java

@@ -58,7 +58,7 @@
  */
 public class MainController extends ApplicationAdapter {
 
-	public static final String VERSION = "beatoraja 0.6.3";
+	public static final String VERSION = "beatoraja 0.6.4";
 
 	private static final boolean debug = false;