/// <summary>
/// Main function of the application
/// </summary>
/// <param name="args"></param>
/// <returns>
/// -1 when an error occured during initialization
/// result of the run function which is a loop returning 0 when ended
/// </returns>
public static int Main(string[] args)
{
var main = new MainClass();
// Initialize application by reading configuration file
if (!InitAppSettings(System.IO.Path.GetDirectoryName(System.Reflection.Assembly.GetEntryAssembly().Location), "RaspberryPiGateway.exe")) return -1;
// Initializa AMQP connection
if (!InitAMQPConnection(false)) return -1;
// start main routine
return main.Run();
}