update readme.md

Author: wuyouzhuguli

readme.md

@@ -53,7 +53,9 @@
 3. [Spring Security添加图形验证码](https://mrbird.cc/Spring-Security-ValidateCode.html)
 4. [Spring Security添加记住我功能](https://mrbird.cc/Spring-Security-RememberMe.html)
 5. [Spring Security短信验证码登录](https://mrbird.cc/Spring-Security-SmsCode.html)
-
+6. [Spring Security Session管理](https://mrbird.cc/Spring-Security-Session-Manage.html)
+7.[Spring Security退出登录](https://mrbird.cc/Spring-Security-logout.html)
+8.[Spring Security权限控制](https://mrbird.cc/Spring-Security-Permission.html)
 ### Spring Cloud教程
 1. [初识Spring Cloud与微服务](https://mrbird.cc/Spring-Cloud%20and%20MicroService.html)
 2. [Spring Cloud Eureka服务治理](https://mrbird.cc/Spring-Cloud-Eureka.html)