add foudation readme.md

Author: chenzomi

.gitignore

@@ -0,0 +1,8 @@
+*.DS_Store
+*/.DS_Store
+.DS_Store
+
+~$*
+
+*/.ipynb_checkpoints
+.ipynb_checkpoints

Frontend/Foundation/01.introduction.pptx

@@ -34,6 +34,8 @@
 | |自动微分|05 手把手实现正向微分框架|[silde](./Frontend/AutoDiff/05.forward_mode.ipynb), [video](https://www.bilibili.com/video/BV1Ne4y1p7WU/), [article](https://zhuanlan.zhihu.com/p/520451681)|
 | |自动微分|06 亲自实现一个PyTorch|[silde](./Frontend/AutoDiff/06.reversed_mode.ipynb), [video](https://www.bilibili.com/video/BV1ae4y1z7E6/), [article](https://zhuanlan.zhihu.com/p/547865589)|
 | |自动微分|07 自动微分的挑战&未来|[silde](./Frontend/AutoDiff/07.challenge.pptx), [video](https://www.bilibili.com/video/BV17e4y1z73W/)|
+|2|AI框架基础|01 基本介绍|[silde](./Frontend/Foundation/01.introduction.pptx), [video](https://www.bilibili.com/video/BV1he4y1z7oD/?vd_source=26de035c60e6c7f810371fdfd13d14b6)|
+||AI框架基础|02 AI框架有什么用|[silde](./Frontend/Foundation/02.fundamentals.pptx), [video]()|
 |||||
 
 **底层编译技术**