Update README.md (#179)

Adding more details based on discussion in
#98

---------

Co-authored-by: Karthik Nadig <kanadig@microsoft.com>

Author: cwebster-99

README.md

@@ -1,6 +1,8 @@
 # Python environment tools for Visual Studio Code
 
-Performant Python environment tooling and support, such as locating all global Python installs and virtual environments.
+Performant Python environment tooling and support, such as locating all global Python installs and virtual environments. 
+
+This project will be consumed by the [Python extension](https://marketplace.visualstudio.com/items?itemName=ms-python.python) directly. You can find the code to consume `pet` in the Python extension [source code](https://github.com/microsoft/vscode-python/blob/main/src/client/pythonEnvironments/base/locators/common/nativePythonFinder.ts). For more information on JSNORPC requests/notifications for this tool, please reference [/docs/JSONRPC.md](https://github.com/microsoft/python-environment-tools/blob/main/docs/JSONRPC.md).
 
 ## Environment Types Supported