Added headers in request

You can add @Soap\Header("foobar", phpType="string") in a method definition

ServiceBinding/RpcLiteralRequestHeaderMessageBinder.php

@@ -0,0 +1,33 @@
+<?php
+/*
+ * This file is part of the BeSimpleSoapBundle.
+ *
+ * (c) Christian Kerl <christian-kerl@web.de>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace BeSimple\SoapBundle\ServiceBinding;
+
+use BeSimple\SoapBundle\ServiceDefinition\Method;
+
+/**
+ * @author Francis Besset <francis.besset@gmail.com>
+ */
+class RpcLiteralRequestHeaderMessageBinder extends RpcLiteralRequestMessageBinder
+{
+    private $header;
+
+    public function setHeader($header)
+    {
+        $this->header = $header;
+    }
+
+    public function processMessage(Method $messageDefinition, $message, array $definitionComplexTypes = array())
+    {
+        $headerDefinition = $messageDefinition->getHeaders()->get($this->header);
+
+        return $this->processType($headerDefinition->getType()->getPhpType(), $message, $definitionComplexTypes);
+    }
+}