static void Main(string[] args)
{
// Find your Account Sid and Auth Token at twilio.com/user/account
string AccountSid = "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
string AuthToken = "your_auth_token";
var twilio = new TwilioRestClient(AccountSid, AuthToken);
twilio.UpdateShortCode("SC6b20cb705c1e8f00210049b20b70fce3", null, null, "http://demo.twilio.com/docs/sms.xml", null, null, null);
}