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

libs/React/Socket/ConnectionInterface.php

@@ -0,0 +1,12 @@
+<?php
+
+namespace React\Socket;
+
+use Evenement\EventEmitterInterface;
+use React\Stream\ReadableStreamInterface;
+use React\Stream\WritableStreamInterface;
+
+interface ConnectionInterface extends ReadableStreamInterface, WritableStreamInterface
+{
+    public function getRemoteAddress();
+}