Register an autoloader function for examples.

examples/SharedConfigurations.php

@@ -1,5 +1,11 @@
 <?php
-require_once '../lib/Predis.php';
+spl_autoload_register(function($class) {
+    $file = __DIR__.'/../lib/'.strtr($class, '\\', '/').'.php';
+    if (file_exists($file)) {
+        require $file;
+        return true;
+    }
+});
 
 $single_server = array(
     'host'     => '127.0.0.1',