Merge branch 'master' of gitee.com:pi-lab/machinelearning_notebook

README.md

@@ -84,6 +84,7 @@
   * [Python tips](tips/python)
 
 * Git
+  * [Git Tips - 常用方法速查，快速入门](https://gitee.com/pi-lab/learn_programming/blob/master/6_tools/git/git-tips.md)
   * [Git快速入门 - Git初体验](https://my.oschina.net/dxqr/blog/134811)
   * [在win7系统下使用TortoiseGit(乌龟git)简单操作Git](https://my.oschina.net/longxuu/blog/141699)
   * [Git系统学习 - 廖雪峰的Git教程](https://www.liaoxuefeng.com/wiki/0013739516305929606dd18361248578c67b8067c8c017b000)