update readme to sfu

Author: lherman-cs

README.md

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+# @pulsebeam/client
+
+Simplifies real-time application development. Defines signaling protocol for connection establishment, handling media and data transmission, and provides infrastructure.
+
+## Status
+
+> [!WARNING]
+> This SDK is currently in active development. We're currently brewing a homegrown WebRTC SFU implementation in Rust, https://github.com/pulseBeamDev/pulsebeam.
+>
+> • [Create GitHub Issues](https://github.com/PulseBeamDev/pulsebeam-js/issues)  
+> • [Join PulseBeam Developer Discord](https://discord.gg/Bhd3t9afuB)  
+
+## Roadmap
+
+The project is in active development, please refer to the [roadmap](https://github.com/PulseBeamDev/pulsebeam-js/issues/6) to track our major milestones. 
+
+## Semantic Versioning
+
+This project adheres to [Semantic Versioning 2.0.0](https://semver.org/).
+
+* **MAJOR version (X.y.z):** Incompatible API changes.
+* **MINOR version (x.Y.z):** Functionality added in a backwards compatible manner.
+* **PATCH version (x.y.Z):** Backwards compatible bug fixes.
+
+## WebRTC Resources
+
+For a deeper understanding of WebRTC concepts, consult the official WebRTC documentation:
+
+* https://developer.mozilla.org/en-US/docs/Web/API/WebRTC_API
+
+## Related Links
+
+|Name|Link|
+|-|-|
+|PulseBeam Server|github.com/pulseBeamDev/pulsebeam|
+|Client SDK|https://github.com/PulseBeamDev/pulsebeam-js|
+|Server SDK|https://github.com/PulseBeamDev/pulsebeam-core|
+|FOSS Server|https://github.com/PulseBeamDev/pulsebeam-server-foss|
+|Signaling Protocol|https://github.com/PulseBeamDev/pulsebeam-proto|
+|Documentation|https://github.com/PulseBeamDev/docs|
+|PulseBeam Cloud|https://cloud.pulsebeam.dev|
+