Update README.md (#30)

* Update README.md

* Update README.md

* Update README.md

README.md

@@ -4,10 +4,20 @@ This repository provides a library of add-on custom operators for [ONNX Runtime]
 # Getting started
 Windows:
 - Install Visual Studio with C++ development tools
+- Prepare Python env and install the pip packages in the requirements.txt if Python support is needed.
 - Copy build.bat to mybuild.bat and edit as needed. You may need to change "Enterprise" to "Community" depending on your Visual Studio version.
 - Run mybuild.bat
-- cd into `out/Windows/RelWithDebInfo` and run `pip install -e .`
-- Run `python test/test_pyops.py` and run the repo root
+
+Linux:
+- Install gcc with C++ support, cmake
+- Prepare Python env and install the pip packages in the requirements.txt if Python support is needed.
+
+Installation
+- cd into `out/<OS_NAME>/RelWithDebInfo` and run `pip install -e .`
+
+Test:
+- cd into `out/<OS_NAME>/RelWithDebInfo` and run `./ortcustomops_test`
+- cd into the repo root and run `pytest test` if the Python support enabled.
 
 # Contributing
 This project welcomes contributions and suggestions.  Most contributions require you to agree to a