added on subscribe and unscribe.

eventSubscribe.go

 	return u
 }
 
-func getURL() {
+func (m *WechatUserInfo) save2CRM() {
 
 }

serveEvents.go

 		joinDate := time.Now().Format("2006-Jan-02")
 		templateSendJoinCommunity(in.header.FromUserName, url, first, remark, communityName, joinDate)
 		processed = true
+		onSubscribe(in)
 		return
 	case "unsubscribe":
+		processed = true
+		in.replyText("")
+		return
 	case "SCAN":
 	case "LOCATION":
 		processed = true