public function login($credentials)
{
$this->_credentials = $credentials;
$this->_client = new \Oara\Curl\Access($credentials);
$valuesLogin = array(new \Oara\Curl\Parameter('_method', 'POST'), new \Oara\Curl\Parameter('us', $this->_credentials['user']), new \Oara\Curl\Parameter('pa', $this->_credentials['password']));
$loginUrl = 'http://affiliates.paddypartners.com/affiliates/login.aspx?';
$urls = array();
$urls[] = new \Oara\Curl\Request($loginUrl, $valuesLogin);
$this->_client->post($urls);
}