fix some docs

README.md

@@ -172,6 +172,11 @@ Here, `client.predict` function has two arguments. `feed` is a `python dict` wit
 - [An End-to-end tutorial from training to inference service deployment](doc/TRAIN_TO_SERVICE.md)
 - [Write Bert-as-Service in 10 minutes](doc/BERT_10_MINS.md)
 
+### Tutorial at AIStudio
+- [Introduction to PaddleServing](https://aistudio.baidu.com/aistudio/projectdetail/605819)
+- [Image Segmentation on Paddle Serving](https://aistudio.baidu.com/aistudio/projectdetail/457715)
+- [Sentimental Analysis](https://aistudio.baidu.com/aistudio/projectdetail/509014)
+
 ### Developers
 - [How to config Serving native operators on server side?](doc/SERVER_DAG.md)
 - [How to develop a new Serving operator?](doc/NEW_OPERATOR.md)

README_CN.md

@@ -169,6 +169,11 @@ print(fetch_map)
 - [端到端完成从训练到部署全流程](doc/TRAIN_TO_SERVICE_CN.md)
 - [十分钟构建Bert-As-Service](doc/BERT_10_MINS_CN.md)
 
+### AIStudio教程
+- [PaddleServing作业](https://aistudio.baidu.com/aistudio/projectdetail/605819)
+- [PaddleServing图像分割](https://aistudio.baidu.com/aistudio/projectdetail/457715)
+- [PaddleServing情感分析](https://aistudio.baidu.com/aistudio/projectdetail/509014)
+
 ### 开发者教程
 - [如何配置Server端的计算图?](doc/SERVER_DAG_CN.md)
 - [如何开发一个新的General Op?](doc/NEW_OPERATOR_CN.md)

python/examples/blazeface/README.md

@@ -3,7 +3,7 @@
 ## Get Model
 ```
 python -m paddle_serving_app.package --get_model blazeface
-tar -xzvf blazeface.tar.gz
+tar -xf blazeface.tar.gz
 ```
 
 ## RPC Service