private static LeaderboardModel ParseLeaderboard(string jsonString)
        {
            LeaderboardModel model = new LeaderboardModel();

            try
            {
                JObject o = JObject.Parse(jsonString);
                JArray  a = (JArray)o["Android"];
                string  myPointsString = (string)o["MyPoints"];
                model.MyPoints = int.Parse(myPointsString);

                foreach (JObject i in a)
                {
                    LeaderboardItem lbItem = new LeaderboardItem()
                    {
                        Batch        = (string)i["emp_batch"],
                        EmployeeId   = (string)i["emp_id"],
                        EmployeeName = (string)i["emp_name"],
                        Points       = int.Parse((string)i["points"])
                    };
                    model.LeaderboardItems.Add(lbItem);
                }
            }
            catch (Exception)
            {
                throw new HttpRequestException("Please make sure you have an active internet connection");
            }

            return(model);
        }
        private static LeaderboardModel ParseLeaderboard(string jsonString)
        {
            LeaderboardModel model = new LeaderboardModel();
            try
            {
                JObject o = JObject.Parse(jsonString);
                JArray a = (JArray)o["Android"];
                string myPointsString = (string)o["MyPoints"];
                model.MyPoints = int.Parse(myPointsString);

                foreach (JObject i in a)
                {
                    LeaderboardItem lbItem = new LeaderboardItem() { 
                        Batch = (string)i["emp_batch"],
                        EmployeeId = (string)i["emp_id"],
                        EmployeeName = (string)i["emp_name"],
                        Points = int.Parse((string)i["points"])
                    };
                    model.LeaderboardItems.Add(lbItem);
                }
            }
            catch (Exception)
            {
                throw new HttpRequestException("Please make sure you have an active internet connection");
            }

            return model;
        }