Alphabetize event

README.md

 *Libraries that are event-driven or implement non-blocking event loops.*
 
 * [Amp](https://github.com/amphp/amp) - An event driven non-blocking I/O library.
-* [React](https://github.com/reactphp/react) - An event driven non-blocking I/O library.
-* [Icicle](https://github.com/icicleio/icicle) - An asynchronous library with coroutines, non-blocking I/O, and multithreading.
-* [Rx.PHP](https://github.com/asm89/Rx.PHP) - A reactive extension library.
-* [Ratchet](https://github.com/ratchetphp/Ratchet) - A web socket library.
-* [Hoa WebSocket](https://github.com/hoaproject/Websocket) - Another web socket library.
+* [Broadway](https://github.com/qandidate-labs/broadway) - An event source and CQRS library.
+* [Cake Event](https://github.com/cakephp/event) - An event dispatcher library (CP).
 * [Elephant.io](https://github.com/Wisembly/Elephant.io) - Yet another web socket library.
-* [Hoa EventSource](https://github.com/hoaproject/Eventsource) - An event source library.
 * [Evenement](https://github.com/igorw/evenement) - An event dispatcher library.
 * [Event](https://github.com/thephpleague/event) - An event library with a focus on domain events.
-* [Cake Event](https://github.com/cakephp/event) - An event dispatcher library (CP).
-* [Broadway](https://github.com/qandidate-labs/broadway) - An event source and CQRS library.
+* [Hoa EventSource](https://github.com/hoaproject/Eventsource) - An event source library.
+* [Hoa WebSocket](https://github.com/hoaproject/Websocket) - Another web socket library.
+* [Icicle](https://github.com/icicleio/icicle) - An asynchronous library with coroutines, non-blocking I/O, and multithreading.
 * [Prooph Event Store](https://github.com/prooph/event-store) - An event source component to persist event messages
+* [Ratchet](https://github.com/ratchetphp/Ratchet) - A web socket library.
+* [React](https://github.com/reactphp/react) - An event driven non-blocking I/O library.
+* [Rx.PHP](https://github.com/asm89/Rx.PHP) - A reactive extension library.
 
 ## Logging
 *Libraries for generating and working with log files.*