Added example usage

Author: Dirk Luijk

README.md

@@ -145,6 +145,15 @@ $app->register(new DoctrineOrmServiceProvider, array(
                 "namespace" => "Bat\Entities",
                 "path" => __DIR__."/src/Bat/Resources/mappings",
             ),
+            // As of 1.1, you can also use the simplified
+            // XML/YAML driver (Symfony2 style)
+            // Mapping files can be named like Foo.orm.yml
+            // instead of Baz.Entities.Foo.dcm.yml
+            array(
+                "type" => "simple_yml",
+                "namespace" => "Baz\Entities",
+                "path" => __DIR__."/src/Bat/Resources/config/doctrine",
+            ),
             // Using PSR-0 namespaceish embedded resources
             // (requires registering a PSR-0 Resource Locator
             // Service Provider)