comment on recursion

src/main.rs

@@ -105,6 +105,7 @@ fn handle_dir(path: PathBuf) {
     for inode in dir {
         let inode = inode.expect("Couldn't read inode");
 
+        // recursively handle directories
         if inode.metadata().unwrap().is_dir() {
             handle_dir(inode.path());
         }