add credit of EmmyLuaCodeStyle

Author: sumneko

README.md

@@ -123,6 +123,7 @@ If you need to compile by yourself, please refer to [here](https://github.com/su
 * [utility](https://github.com/sumneko/utility)
 * [vscode-lua-doc](https://github.com/actboy168/vscode-lua-doc)
 * [json.lua](https://github.com/actboy168/json.lua)
+* [EmmyLuaCodeStyle](https://github.com/CppCXY/EmmyLuaCodeStyle)
 
 ## Acknowledgement