Update README.md

Author: FZambia

README.md

@@ -21,6 +21,7 @@ Centrifuge library provides a lot of top of raw WebSocket transport. Important l
 * WebSocket bidirectional transport using JSON or binary Protobuf formats, both based on a [strict Protobuf schema](https://github.com/centrifugal/protocol/blob/master/definitions/client.proto). Code generation is used to push both JSON and Protobuf serialization performance to the limits
 * Our [own WebSocket emulation layer](https://centrifugal.dev/blog/2022/07/19/centrifugo-v4-released#modern-websocket-emulation-in-javascript) over HTTP-streaming (JSON + Protobuf) and Eventsource (JSON) without sticky sessions requirement for distributed setup
 * Possibility to use unidirectional transports without using custom Centrifuge SDK library: see examples for [GRPC](https://github.com/centrifugal/centrifuge/tree/master/_examples/unidirectional_grpc), [EventSource(SSE)](https://github.com/centrifugal/centrifuge/tree/master/_examples/unidirectional_sse), [HTTP-streaming](https://github.com/centrifugal/centrifuge/tree/master/_examples/unidirectional_http_stream), [Unidirectional WebSocket](https://github.com/centrifugal/centrifuge/tree/master/_examples/unidirectional_ws)
+* Experimental support for WebSocket over HTTP/2 (RFC 8441), see [the examples](https://github.com/centrifugal/centrifuge/tree/master/_examples/experimental)
 * Built-in horizontal scalability with Redis PUB/SUB, consistent Redis sharding, Redis Sentinel and Redis Cluster support, [super-optimized Redis communication layer](https://centrifugal.dev/blog/2022/12/20/improving-redis-engine-performance)
 * Effective non-blocking broadcasts towards client connections using individual queues
 * Native authentication over HTTP middleware or custom token-based (ex. JWT)