public function addFormMacro()
 {
     app('form')->macro('captcha', function ($options = array()) {
         $image = \Illuminate\Support\Facades\HTML::image(Captcha::img(), 'Captcha Image');
         $label = "<label for=\"captcha\">Enter the Captcha</label> ";
         $input = "<input type=\"text\"  name=\"captcha\" id=\"captcha\" autcomplete=\"off\" required/>";
         return $image . $label . $input;
     });
 }
 /**
  * 
  *
  * @param null $config
  * @return string 
  * @static 
  */
 public static function img($config = null)
 {
     return \Mews\Captcha\Captcha::img($config);
 }