Rename examples and update some comments.

[ci skip]

examples/shared.php

@@ -0,0 +1,44 @@
+<?php
+
+/*
+ * This file is part of the Predis package.
+ *
+ * (c) Daniele Alessandri <suppakilla@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+require __DIR__.'/../autoload.php';
+
+function redis_version($info)
+{
+    if (isset($info['Server']['redis_version'])) {
+        return $info['Server']['redis_version'];
+    } else if (isset($info['redis_version'])) {
+        return $info['redis_version'];
+    } else {
+        return 'unknown version';
+    }
+}
+
+$single_server = array(
+    'host'     => '127.0.0.1',
+    'port'     => 6379,
+    'database' => 15
+);
+
+$multiple_servers = array(
+    array(
+       'host'     => '127.0.0.1',
+       'port'     => 6379,
+       'database' => 15,
+       'alias'    => 'first',
+    ),
+    array(
+       'host'     => '127.0.0.1',
+       'port'     => 6380,
+       'database' => 15,
+       'alias'    => 'second',
+    ),
+);