/// <summary>
/// Requests the Auth token and secret for the API
/// And stores into _consumerToken
/// </summary>
private void RequestLoginToken()
{
string loginTokenUrl = OAuth.GenerateURL(ApiUrl, _loginTokenUrl, _loginTokenMethod, new PhotobucketToken());
ResponseMessage loginTokenResponseMessage = GetResponseMessageFromUrl(loginTokenUrl, _loginTokenMethod);
_consumerToken = OAuth.GetConsumerTokenFromResponse(loginTokenResponseMessage.ResponseString);
_appAuthorized = true;
}