update README

Author: ginuerzh

README.md

@@ -12,8 +12,6 @@ GO Simple Tunnel
 
 [English README](README_en.md)
 
-### ！！！[V3版本已经可用，欢迎抢先体验](https://latest.gost.run)！！！
-
 特性
 ------
 
@@ -40,6 +38,8 @@ Telegram讨论群: <https://t.me/gogost>
 
 Google讨论组: <https://groups.google.com/d/forum/go-gost>
 
+GOST v3 <https://gost.run>
+
 安装
 ------
 

README_en.md

@@ -35,6 +35,8 @@ Telegram group: <https://t.me/gogost>
 
 Google group: <https://groups.google.com/d/forum/go-gost>
 
+GOST v3: <https://gost.run>
+
 Installation
 ------