/**
  * Load the JSON configuration, if present.
  *
  * @since 0.1.0
  *
  * @return bool Whether the file was loaded successfully.
  */
 public static function load_json_config()
 {
     $working_dir = getcwd();
     if (!$working_dir) {
         return false;
     }
     $config = self::load_json_file($working_dir . '/wp-l10n-validator.json');
     if (!$config) {
         return false;
     }
     self::$config = array_merge(self::$config, $config);
     return true;
 }