move subscribe event to it's own handler.

serveEvents.go

 package main
 
-import "time"
-
 func (ss *openIDSessionData) serveEvents(in InWechatMsg) (processed bool) {
 	processed = false
 	e := in.body.(EventMsg)
 	switch e.Event {
 	case "subscribe":
 		in.replyText("/::D, 来啦")
-		first := "欢迎加入海外学子之家，这里凝聚着哈工大人在澳洲的，勤奋，努力和奋斗"
-		url := "http://wechat.hitxy.org.au/profile_newly_register"
-		remark := "如果您是首次加入本社区，请点击详情完善您的个人资料"
-		communityName := "哈工大澳洲校友会"
-		joinDate := time.Now().Format("2006-Jan-02")
-		templateSendJoinCommunity(in.header.FromUserName, url, first, remark, communityName, joinDate)
 		processed = true
 		onSubscribe(in)
 		return