public Program()
        {
            Get["/dtmf"] = x =>
            {
                Plivo.XML.Response resp = new Plivo.XML.Response();

                // Add Speak XML Tag
                resp.AddSpeak("Sending digits", new Dictionary<string, string>() { });

                // Add DTMF XML Tag
                resp.AddDTMF("12345", new Dictionary<string, string>() { });

                Debug.WriteLine(resp.ToString());

                var output = resp.ToString();
                var res = (Nancy.Response)output;
                res.ContentType = "text/xml";
                return res;

            };
        }
        public Program()
        {
            Get["/dtmf"] = x =>
            {
                Plivo.XML.Response resp = new Plivo.XML.Response();

                // Add Speak XML Tag
                resp.AddSpeak("Sending digits", new Dictionary <string, string>()
                {
                });

                // Add DTMF XML Tag
                resp.AddDTMF("12345", new Dictionary <string, string>()
                {
                });

                Debug.WriteLine(resp.ToString());

                var output = resp.ToString();
                var res    = (Nancy.Response)output;
                res.ContentType = "text/xml";
                return(res);
            };
        }