📝 UPDATE README

Author: Reaper622

README.md

@@ -9,4 +9,7 @@ JavaScript设计模式的相关学习
 
 ### 结构型
 - [适配器模式](https://github.com/Reaper622/JavaScript-DesignPatterns/blob/master/Adapter/Adapter.md)
-- [代理模式](https://github.com/Reaper622/JavaScript-DesignPatterns/blob/master/Proxy/Proxy.md)
+- [代理模式](https://github.com/Reaper622/JavaScript-DesignPatterns/blob/master/Proxy/Proxy.md)
+
+### 行为型
+- [策略模式](https://github.com/Reaper622/JavaScript-DesignPatterns/blob/master/Strategy/Strategy.md)