Update README.md (#788)

Author: kineticsquid

README.md

@@ -1,7 +1,12 @@
-# Publish Extensions to Open VSX
+# Publish and Deprecate Extensions at Open VSX
 
 [![Gitpod Ready-to-Code](https://img.shields.io/badge/Gitpod-ready--to--code-908a85?logo=gitpod)](https://gitpod.io/#https://github.com/open-vsx/publish-extensions)
 
-A CI script for publishing open-source VS Code extensions to [open-vsx.org](https://open-vsx.org).
+This repo contains:
+- A CI script for publishing open-source VS Code extensions to [open-vsx.org](https://open-vsx.org).
+- [`extensions.json`](https://github.com/kineticsquid/publish-extensions/blob/master/extensions.json) file specifying which extensions get auto-published to [open-vsx.org](https://open-vsx.org).
+- [`extension-control/extensions.json`](https://github.com/kineticsquid/publish-extensions/tree/master/extension-control) file indicating malicious and deprecated extensions.
+
+For instructions on auto-publishing extensions, marking extensions as deprecated, and flagging malicious extensions, please see the [Open VSX Wiki](https://github.com/EclipseFdn/open-vsx.org/wiki).
 
 This repository is open for contributions, but before you contribute, please read our [Contribution guidelines](CONTRIBUTING.md).