public override Task <T> ReadData()
{
Configuration configManager = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
KeyValueConfigurationCollection confCollection = configManager.AppSettings.Settings;
string app_id = confCollection["app_id"].Value;
string package = confCollection["latestJson"].Value;
string baseURL = confCollection["openExchangeBasicUrl"].Value;
string url = string.Format("{0}{1}?app_id={2}", baseURL, package, app_id);
Task <T> result = HttpRequester.GetData <T>(url);
return(result);
}