chore: import upstream snapshot with attribution

internal/website/docs/examples/pubsub-nats.md

@@ -0,0 +1,45 @@
+---
+layout: default
+---
+
+# Pub/Sub with NATS Broker
+
+Use the NATS broker for pub/sub.
+
+## In code
+
+```go
+package main
+
+import (
+    "log"
+    "go-micro.dev/v6"
+    "go-micro.dev/v6/broker"
+    bnats "go-micro.dev/v6/broker/nats"
+)
+
+func main() {
+    b := bnats.NewNatsBroker()
+    svc := micro.NewService("nats-pubsub", micro.Broker(b))
+    svc.Init()
+
+    // subscribe
+    _, _ = broker.Subscribe("events", func(e broker.Event) error {
+        log.Printf("received: %s", string(e.Message().Body))
+        return nil
+    })
+
+    // publish
+    _ = broker.Publish("events", &broker.Message{Body: []byte("hello")})
+
+    svc.Run()
+}
+```
+
+## Via environment
+
+Run your service with env vars set:
+
+```bash
+MICRO_BROKER=nats MICRO_BROKER_ADDRESS=nats://127.0.0.1:4222 go run main.go
+```