Update nephio repo readme to be release neutral (#508)

Author: liamfallon

README.md

@@ -5,18 +5,16 @@ deploying and managing highly distributed, interconnected workloads such as 5G
 Network Functions, and the underlying infrastructure on which those workloads
 depend.
 
-The R1 Release is now available! To get started with Nephio, view the [docs repo](https://github.com/nephio-project/docs) 
-which contains the [R1 Demo installation instructions](https://github.com/nephio-project/docs/blob/main/install-guide/README.md) 
-and [Quick start exercises](https://github.com/nephio-project/docs/blob/main/user-guide/exercises.md). 
-An announcement from The Linux Foundation regarding the release can be found 
-[here](https://www.linuxfoundation.org/press/nephio-community-gains-momentum-with-release-1-to-simplify-cloud-native-network-automation).
+To get started with Nephio, view the [documentation website](https://docs.nephio.org/docs/)
+which contains the [Demo installation instructions](https://docs.nephio.org/docs/guides/install-guides/) 
+and Quick Start Exercises for [Free5GC](https://docs.nephio.org/docs/guides/user-guides/exercise-1-free5gc/)
+and [OAI](https://docs.nephio.org/docs/guides/user-guides/exercise-2-oai/). 
 
-To learn more about the Nephio project, refer to the [Learning with Nephio R1](https://www.youtube.com/playlist?list=PLiW9_IXAWtkt8lbFe1jF_bzEI4gd-Jlq4)
+To learn more about the Nephio project, refer to the [Learning with Nephio](https://www.youtube.com/playlist?list=PLiW9_IXAWtkt8lbFe1jF_bzEI4gd-Jlq4)
 series and it's corresponding  [wiki pages](https://wiki.nephio.org/display/HOME/Learning+with+Nephio+R1).
 
-If you wish to participate in building R2, please join our SIG meetings, or reach out to
-us on Slack. You may also want to peruse the [R2 Planning](https://github.com/orgs/nephio-project/projects/11)
-project board.
+If you wish to participate in building Nephio, please join our SIG meetings, or reach out to us on Slack. You may also want to peruse the [Nephio Planning](https://github.com/orgs/nephio-project/projects)
+project boards.
 
 ## Community