Update README.md

Updating readme.md to reflect archival process.

README.md

@@ -1,3 +1,6 @@
+# WARNING: Archive repository in process
+Per [Merging unitycatalog-ui repo into unitycatalog (main) repo (#349)](https://github.com/unitycatalog/unitycatalog/discussions/349), as of September 2nd, 2024, we have merged the `unitycatalog-ui/main` repo/branch into `unitycatalog/ui`. Upon debug/review, we will archive this repository on September 5th, 2024.
+
 # Prerequisite
 
 Node: https://nodejs.org/en/download/package-manager
@@ -27,4 +30,4 @@ You will also see any lint errors in the console.
 
 OSS Unity Catalog supports Sign in with Google. You can authenticate with Google by clicking the "Sign in with Google" button on the login page, once OAuth has been configured. To configure this, follow the steps to obtain a [Google API Client ID](https://developers.google.com/identity/gsi/web/guides/get-google-api-clientid) and configure your OAuth consent screen.
 
-Once you have the client ID, add it to the `.env` file after `REACT_APP_GOOGLE_CLIENT_ID=` and change the `REACT_APP_GOOGLE_AUTH_ENABLED` flag from false to true. Restart yarn. 
+Once you have the client ID, add it to the `.env` file after `REACT_APP_GOOGLE_CLIENT_ID=` and change the `REACT_APP_GOOGLE_AUTH_ENABLED` flag from false to true. Restart yarn.