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

.gitignore

@@ -4,3 +4,5 @@
 *.pth
 __pycache__
 fig-res*
+Thumbs.db
+Thumbs.db:encryptable

index.md

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+# 总索引
+
+## 1. 课程相关
+
+* 课程讲义： https://gitee.com/pi-lab/machinelearning_notebook
+* 课程作业和报告：https://gitee.com/pi-lab/machinelearning_homework
+* [《机器学习算法与实现》](http://www.adv-ci.com/blog/ml-alg-impl/)
+