fix gitignore and creat the dir saves

.gitignore

@@ -1 +1,2 @@
 /target
+/saves

gitignore

@@ -1 +0,0 @@
-saves/*

src/main.rs

@@ -360,6 +360,7 @@ fn load_path_sounds() -> Vec<String> {
 }
 
 fn load_path_saves() -> Vec<String> {
+    fs::create_dir_all("./saves").expect("fail to creat 'saves' !");
     fs::read_dir("./saves")
         .unwrap()
         .filter_map(|res| res.ok())