Update README.md

Snailclimb · Snailclimb · commit f050e9005bfb · 2019-10-02T23:24:15.000+08:00
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 **如果国内访问缓慢的话，可以通过码云查看：** https://gitee.com/SnailClimb/springboot-guide
 
+**在线阅读：**
+
+1. http://snailclimb.top/springboot-guide
+2. https://snailclimb.gitee.io/springboot-guide （上面一个地址访问速度缓慢的建议使用这个路径访问）
+
 ## 重要知识点
 
 ### 开始
