Fixing after($output) example in README

it should be

   function after($output){
        $config = array('indent' => TRUE,
                        'output-xhtml' => TRUE,
                        'wrap' => 200);

        $encoding = strtoupper(str_replace('-','', option('encoding')));
        $tidy = tidy_parse_string($output, $config, $encoding);
        $tidy->cleanRepair();
        return $tidy;
   }