public function login($credentials)
{
$this->_credentials = $credentials;
$this->_client = new \Oara\Curl\Access($credentials);
$valuesLogin = array(new \Oara\Curl\Parameter('fromUrl', 'https://www.winneraffiliates.com/'), new \Oara\Curl\Parameter('username', $this->_credentials['user']), new \Oara\Curl\Parameter('password', $this->_credentials['password']));
$loginUrl = 'https://www.winneraffiliates.com/login/submit';
$urls = array();
$urls[] = new \Oara\Curl\Request($loginUrl, $valuesLogin);
$this->_client->post($urls);
}