added networking access fatal error message

accessToken.go

@@ -70,8 +70,11 @@ func renewAuthToken() (AuthToken, error) {
 	//url := "http://vimeo.com/api/v2/brad/info.json"
 	url := fmt.Sprintf("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=%s&secret=%s", APIConfig.Appid, APIConfig.AppSecret)
 	var myClient = &http.Client{Timeout: 20 * time.Second}
+	log.Println("renew access token from Internet api.weixin.qq.com")
 	r, err := myClient.Get(url)
 	if err != nil {
+		log.Fatal("http access api.weixin.qq.com failed")
+		log.Fatal(err)
 		return AuthToken{}, err
 	}
 	defer r.Body.Close()