Move the logic of the connection factory option to a dedicated class.

lib/Predis/Options/ClientConnectionFactory.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Predis\Options;
+
+use Predis\IConnectionFactory;
+use Predis\ConnectionFactory;
+
+class ClientConnectionFactory extends Option {
+    public function validate($value) {
+        if ($value instanceof IConnectionFactory) {
+            return $value;
+        }
+        if (is_array($value)) {
+            return new ConnectionFactory($value);
+        }
+    }
+
+    public function getDefault() {
+        return new ConnectionFactory();
+    }
+}