Fix examples by replacing references to new Socket

Author: clue

example/client.php

@@ -9,13 +9,13 @@
 
 $factory = new Datagram\Factory($loop, $resolver);
 
-$factory->createClient('localhost', 1234)->then(function (Datagram\Client $client) use ($loop) {
+$factory->createClient('localhost', 1234)->then(function (Datagram\Socket $client) use ($loop) {
     $client->send('first');
 
     $client->on('message', function($message, $server) {
         //$remote->send() is same as $client->send()
 
-        echo 'received "' . $message . '" from ' . $server->getAddress() . PHP_EOL;
+        echo 'received "' . $message . '" from ' . $server. PHP_EOL;
     });
 
     $client->on('error', function($error, $server) {

example/server.php

@@ -6,11 +6,11 @@
 
 $factory = new Datagram\Factory($loop);
 
-$factory->createServer(1234)->then(function (Datagram\Server $server) {
-    $server->on('message', function($message, $client) {
-        $client->send('hello '.$client->getAddress().'! echo: '.$message);
+$factory->createServer(1234)->then(function (Datagram\Socket $server) {
+    $server->on('message', function($message, $address) use ($server) {
+        $server->send('hello ' . $address . '! echo: ' . $message, $address);
 
-        echo 'client ' . $client->getAddress() . ': ' . $message . PHP_EOL;
+        echo 'client ' . $address . ': ' . $message . PHP_EOL;
     });
 });