transfer KF helper function

wechatMsg.go

 	str, _ := BuildTextMsg(m.header.FromUserName, s)
 	m.instantResponse <- str
 }
+
+func (m *InWechatMsg) transfer2KF() {
+	str, _ := BuildKFTransferAnyOneMsg(m.header.FromUserName)
+	m.replyXML(str)
+}
+
+func (m *InWechatMsg) transfer2SpecificKF(kf string) {
+	str := buildKfForwardMsg(m.header.FromUserName, kf)
+	m.replyXML(str)
+}