added initial support for service definition

ServiceDefinition/Loader/LoaderInterface.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Bundle\WebServiceBundle\ServiceDefinition\Loader;
+
+use Bundle\WebServiceBundle\ServiceDefinition\ServiceDefinition;
+
+interface LoaderInterface
+{
+    /**
+     * Loads the contents of the given ServiceDefinition.
+     *
+     * @param ServiceDefinition $definition
+     */
+    function loadServiceDefinition(ServiceDefinition $definition);
+}