public function index()
    {
        $captchaSetup   =   array(
            'img_path'  =>  'public/images/captcha/',
            'img_url'   =>  site_url('captcha')
        );
        $layoutEcho =   array(
            'NOME_CLIENTE'  =>  'Clovis Filho',
            'CAPTCHA'       =>  create_captcha($captchaSetup)
        );

        $this->load->view('header', $layoutEcho);
        $this->load->view('login/formulario');
    }