added new socket manager, errorhandling and testing is not finished yet

libs/Evenement/EventEmitterInterface.php

@@ -0,0 +1,22 @@
+<?php
+
+/*
+ * This file is part of Evenement.
+ *
+ * (c) Igor Wiedler <igor@wiedler.ch>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Evenement;
+
+interface EventEmitterInterface
+{
+    public function on($event, callable $listener);
+    public function once($event, callable $listener);
+    public function removeListener($event, callable $listener);
+    public function removeAllListeners($event = null);
+    public function listeners($event);
+    public function emit($event, array $arguments = []);
+}