bug for language file

In option-tree, version: 2.0.16, line: 159
define( 'OT_LANG_DIR', dirname( plugin_basename( __FILE__ ) ) . '/languages/' );

Base on the WordPress function plugin_basename, it will strip first / in the value, so it could not found any language files in OT_THEME_MODE=true.

I made a simply change in ot-loader.php
line 343, I add a slash in front of OT_LANG_DIR :

public function load_textdomain() {
      if ( false == OT_THEME_MODE && false == OT_CHILD_THEME_MODE ) {
        load_plugin_textdomain( 'option-tree', false, OT_LANG_DIR . 'plugin' );
      } else {
			load_theme_textdomain( 'option-tree', '/' . OT_LANG_DIR . 'theme-mode' );
      }
    }

http://ww.wp.xz.cn/extend/plugins/option-tree/