$authApi = AuthenticateApi::getInstance();
MongoMapper::addConnection(array('name' => 'connectionName', 'url' => 'mongodb://*****:*****@gmail.com');
$credentials->setField('password', $authApi->hashPassword('password'));
$user->setField('personalInfo', $personalInfo);
$user->setField('credentials', $credentials);
$newUser = $user;
