protected function templateVars($file, $vars)
    {
        $start = $this->delimiter[0];
        $end = $this->delimiter[1];

        foreach ($vars as $var) {
            $replace = $start . $var . $end;
            if (in_array($var, $this->vars)) {
                File::put($file, str_replace($replace, $this->$var, File::get($file)));
            }
        }
    }