Update README

README.md

@@ -3,10 +3,5 @@
 Package Orchestration Server (a.k.a. Porch) is a k8s extension apiserver
 which manages the lifecycle of KRM configuration packages.
 
-You can run Porch:
-
-* [On GKE](../site/guides/porch-installation.md)
-* [Locally](./docs/running-locally.md), intended primarily for [development](./docs/development.md)
-
-If you already have Porch installed, you can proceed to the
-[user guide](../site/guides/porch-user-guide.md).
+This code was donated to Nephio from the [kpt](https://github.com/kptdev/kpt)
+project as of December 2023.