Update README for two weeks past migration (#19)

* Update README for two weeks past migration

* Put migration notice above contributing

Author: jbarry-bdai

README.md

@@ -3,23 +3,6 @@
 ![Python Support](https://img.shields.io/badge/python-3.8%20%7C%203.9%20%7C%203.10%20%7C%203.11%20%7C%203.12-blue)
 ![ROS Support](https://img.shields.io/badge/ROS-humble%20%7C%20jazzy-blue)
 
-# Repository Migration Notice
-
-> [!IMPORTANT]
-> This repository has moved to the **RAI-Opensource** GitHub organization!
->
-> Current status: **Migrated**.
-> - Migration target org: https://github.com/RAI-Opensource
-> - Previous target org: https://github.com/bdaiinstitute
->
-> What to do now:
-> - Update your git remote:
->   ```bash
->   git remote set-url origin https://github.com/RAI-Opensource/proto2ros
->   ```
-> - If you maintain downstream docs/scripts, update links from this repository to the new org.
-
-
 ## Overview
 
 `proto2ros` helps maintain an interoperability layer between Protobuf dependent and ROS 2 aware code by generating equivalent ROS 2 message definitions given source Protobuf message definitions, as well bi-directional conversion APIs in relevant languages such as C++ and Python. To date, Protobuf syntax versions 2 and 3 are supported but only syntax version 3 has been extensively tested.
@@ -33,6 +16,16 @@ This repository contains the following packages:
 | [`proto2ros`](proto2ros)              | Machinery for ROS 2 equivalent message generation and conversion code generation.  |
 | [`proto2ros_tests`](proto2ros_tests)  | End-to-end tests for `proto2ros` generated messages and message conversion APIs.   |
 
+## Migration Notice
+
+On April 28, 2026 this repository moved to the **RAI-Opensource** GitHub organization.  If you are still pulling from the previous bdaiinstitute GitHub organization, please update your git remote:
+   ```bash
+   git remote set-url origin https://github.com/RAI-Opensource/proto2ros
+   ```
+
+If you maintain downstream docs/scripts, update links from this repository to the new org.
+
+
 ## Next steps
 
 See [contribution guidelines](CONTRIBUTING.md)!