Add event emitter

> Emits events using Go way, with wildcard, predicates, cancellation
possibilities and many other good wins.

See: https://github.com/olebedev/emitter

README.md

@@ -511,6 +511,7 @@ See [go-hardware](https://github.com/rakyll/go-hardware) for a comprehensive lis
 
 * [dbus](https://github.com/godbus/dbus) - Native Go bindings for D-Bus.
 * [EventBus](https://github.com/asaskevich/EventBus) - The lightweight event bus with async compatibility.
+* [emitter](https://github.com/olebedev/emitter) - Emits events using Go way, with wildcard, predicates, cancellation possibilities and many other good wins.
 * [go-notify](https://github.com/TheCreeper/go-notify) - Native implementation of the freedesktop notification spec.
 * [go-nsq](https://github.com/nsqio/go-nsq) - the official Go package for NSQ
 * [gopush-cluster](https://github.com/Terry-Mao/gopush-cluster) - gopush-cluster is a go push server cluster.