@IBAction func btnLoginTouchUpInside(sender: UIButton) {
        let params = AuthLoginParams(Username: txtFieldUsername.text!, Password: txtFieldPassword.text!)

        AuthLoginRequest.FetchUser(params) { (userModel) -> Void in
            if(userModel.IsAuthorized){
                self.performSegueWithIdentifier("mainStoryboardSegue", sender: nil)
            }else{

            }
        }
    }