message: LATEST PACKAGE add Cuda11 and Client Py38
diff: @@ -22,6 +22,8 @@ https://paddle-serving.bj.bcebos.com/whl/paddle_serving_server_gpu-0.0.0.post10-
  https://paddle-serving.bj.bcebos.com/whl/paddle_serving_server_gpu-0.0.0.post101-py3-none-any.whl
  #cuda10.2 with TensorRT 7
  https://paddle-serving.bj.bcebos.com/whl/paddle_serving_server_gpu-0.0.0.post102-py3-none-any.whl
  +#cuda11.0 with TensorRT 7 (beta)
  +https://paddle-serving.bj.bcebos.com/whl/paddle_serving_server_gpu-0.0.0.post11-py3-none-any.whl
  ```
  ### Python 2
  ```
  @@ -33,17 +35,24 @@ https://paddle-serving.bj.bcebos.com/whl/paddle_serving_server_gpu-0.0.0.post10-
  https://paddle-serving.bj.bcebos.com/whl/paddle_serving_server_gpu-0.0.0.post101-py2-none-any.whl
  #cuda10.2 with TensorRT 7
  https://paddle-serving.bj.bcebos.com/whl/paddle_serving_server_gpu-0.0.0.post102-py2-none-any.whl
  +#cuda11.0 with TensorRT 7 (beta)
  +https://paddle-serving.bj.bcebos.com/whl/paddle_serving_server_gpu-0.0.0.post11-py2-none-any.whl
  ```
  ## Client
  -### Python 3.7
  -```
  -https://paddle-serving.bj.bcebos.com/whl/paddle_serving_client-0.0.0-cp37-none-any.whl
  -```
  +
  ### Python 3.6
  ```
  https://paddle-serving.bj.bcebos.com/whl/paddle_serving_client-0.0.0-cp36-none-any.whl
  ```
  +### Python 3.8
  +```
  +https://paddle-serving.bj.bcebos.com/whl/paddle_serving_client-0.0.0-cp38-none-any.whl
  +```
  +### Python 3.7
  +```
  +https://paddle-serving.bj.bcebos.com/whl/paddle_serving_client-0.0.0-cp37-none-any.whl
  +```
  ### Python 3.5
  ```
  https://paddle-serving.bj.bcebos.com/whl/paddle_serving_client-0.0.0-cp35-none-any.whl
  @@ -53,6 +62,7 @@ https://paddle-serving.bj.bcebos.com/whl/paddle_serving_client-0.0.0-cp35-none-a
  https://paddle-serving.bj.bcebos.com/whl/paddle_serving_client-0.0.0-cp27-none-any.whl
  ```
  +
  ## App
  ### Python 3
  ```
  