url being & is encoded to \\u0026 cause signature check failed.

kfsend.go

@@ -202,7 +202,7 @@ func kfSendNews(toUser, title, description string, articles []sendNewsArticle) {
 	s.News.Articles = a
 
 	//marshal
-	j, _ := json.Marshal(s)
+	j, _ := myJSONMarshal(s)
 	log.Println(string(j))
 	//send
 	u := getKfSendURL()