Update README.md

funasr/runtime/python/onnxruntime/README.md

@@ -8,6 +8,10 @@ install from pip
 pip install -U funasr_onnx
 # For the users in China, you could install with the command:
 # pip install -U funasr_onnx -i https://mirror.sjtu.edu.cn/pypi/web/simple
+# If you want to export .onnx file, you should install funasr
+pip install -U funasr
+# For the users in China, you could install with the command:
+# pip install -U funasr -i https://mirror.sjtu.edu.cn/pypi/web/simple
 ```
 
 or install from source code