Document events at the top of each EventEmitter class

Author: igorw

Server.php

@@ -5,6 +5,7 @@
 use Evenement\EventEmitter;
 use React\EventLoop\LoopInterface;
 
+// Events: connection
 class Server extends EventEmitter implements ServerInterface
 {
     public $master;

ServerInterface.php

@@ -4,6 +4,7 @@
 
 use Evenement\EventEmitterInterface;
 
+// Events: connection
 interface ServerInterface extends EventEmitterInterface
 {
     public function listen($port, $host = '127.0.0.1');