Merge pull request #10 from github/update-readme-description

Update README with improved description

Author: ashleywolf

README.md

@@ -1,2 +1,11 @@
 # copilot-plugins
-Marketplace for Copilot Plugins
+
+The official GitHub Copilot plugins collection — MCP servers, skills, hooks, and other extensibility tools for GitHub Copilot.
+
+## Contributing
+
+Contributions are welcome! Please read our [Contributing Guide](CONTRIBUTING.md) for details on how to submit pull requests.
+
+## License
+
+This project is licensed under the [MIT License](LICENSE).