Update README_EN.md

Author: xiaohuihui1022

README_EN.md

@@ -1,5 +1,9 @@
 # AnswerIt - A simple Q&A plugin in Minecraft
 
+# Select your language
+
+<h3><a href=".\README.md">简体中文</a> <a href=".\README_EN.md">English</a></h3>
+
 ![](https://img.shields.io/badge/Spigot%2FPaper-1.13%2B-orange)
 ![](https://img.shields.io/github/license/MinecraftProgrammingTeam/AnswerIt)
 ![](https://img.shields.io/badge/made%20in-MPT-important)