docs: init README for the monorepo

README.md

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+# socket.io
+
+[![Latest NPM version](https://img.shields.io/npm/v/socket.io.svg)](https://www.npmjs.com/package/socket.io)
+[![Build status](https://github.com/socketio/socket.io/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/socketio/socket.io/actions/workflows/ci.yml)
+[![Downloads per month](https://img.shields.io/npm/dm/socket.io.svg)]((https://www.npmjs.com/package/socket.io))
+
+## Getting Started
+
+Please check our documentation [here](https://socket.io).
+
+## Questions
+
+Our [issues list](https://github.com/socketio/socket.io/issues) is exclusively reserved for bug reports and feature requests. For usage questions, please use the following resources:
+
+- read our [documentation](https://socket.io/docs/v4/)
+- check our [troubleshooting guide](https://socket.io/docs/v4/troubleshooting-connection-issues/)
+- look for/ask questions on [Stack Overflow](https://stackoverflow.com/questions/tagged/socket.io)
+- create a new [discussion](https://github.com/socketio/socket.io/discussions/new?category=q-a)
+
+## Security
+
+If you think that you have found a security vulnerability in our project, please do not create an issue in this GitHub repository, but rather refer to our [Security Policy](./SECURITY.md).
+
+## Issues and contribution
+
+Please make sure to read our [Contributing Guide](./CONTRIBUTING.md) before creating an issue or making a pull request.
+
+Thanks to everyone who has already contributed to Socket.IO!
+
+<a href="https://github.com/socketio/socket.io/graphs/contributors"><img src="https://opencollective.com/socketio/contributors.svg?width=890" /></a>
+
+## License
+
+[MIT](https://opensource.org/licenses/MIT)