Indicate new repository location. (#282)

README.md

@@ -1,5 +1,11 @@
 # LaunchDarkly Server-Side SDK for Node.js
 
+# Important note
+
+As mentioned in the [repository changelog](https://github.com/launchdarkly/node-server-sdk/blob/main/CHANGELOG.md), the `launchdarkly-node-server-sdk` project has been renamed to `@launchdarkly/node-server-sdk`. All future releases will be made from the [new repository](https://github.com/launchdarkly/js-core/tree/main/packages/sdk/server-node). Please consider upgrading and filing potential requests in that repository's [issue tracker](https://github.com/launchdarkly/js-core/issues?q=is%3Aissue+is%3Aopen+label%3A%22package%3A+sdk%2Fserver-node%22+sort%3Aupdated-desc).
+
+## v7.x readme
+
 [![NPM](https://img.shields.io/npm/v/launchdarkly-node-server-sdk.svg?style=flat-square)](https://www.npmjs.com/package/launchdarkly-node-server-sdk)
 [![CircleCI](https://circleci.com/gh/launchdarkly/node-server-sdk.svg?style=svg)](https://circleci.com/gh/launchdarkly/node-server-sdk)
 [![Documentation](https://img.shields.io/static/v1?label=GitHub+Pages&message=API+reference&color=00add8)](https://launchdarkly.github.io/node-server-sdk)