Repository is deprecated (#311)

Update README.md

Author: makseq

README.md

@@ -1,3 +1,16 @@
+---------------
+
+# This repository is deprecated 
+
+This repository has been deprecated in favor of
+https://github.com/HumanSignal/label-studio/tree/develop/web/libs/editor
+
+Now it's read-only. Address all your issues and PRs to https://github.com/HumanSignal/label-studio/.
+
+---------------
+
+
+
 ## Data Manager 2.0 · ![Build and Test](https://github.com/heartexlabs/dm2/workflows/Build%20and%20Test/badge.svg) · [![npm version](https://badge.fury.io/js/%40heartexlabs%2Fdatamanager.svg)](https://badge.fury.io/js/%40heartexlabs%2Fdatamanager)
 
 [Website](https://labelstud.io/) • [Docs](https://labelstud.io/guide) • [Twitter](https://twitter.com/heartexlabs) • [Join Slack Community](https://slack.labelstud.io)