Update README.md

徐胖 · web-flow · commit 658830d86656 · 2022-08-16T09:17:06.000+08:00
diff --git a/README.md b/README.md
@@ -1,4 +1,7 @@
 
+# Deprecated
+use https://github.com/Trisia/gotlcp instead
+
 # gmsm
 GM SM2/3/4 library based on Golang
 =======
