[SoapBundle] Keep debug in WebServiceContext

Issue #6
The generated cache is incorrect (maybe because service are cached).
To fix the problem quickly, the debug mode is enabled.

src/BeSimple/SoapBundle/WebServiceContext.php

@@ -52,6 +52,8 @@ class WebServiceContext
         $this->typeRepository = $typeRepository;
         $this->converters     = $converters;
 
+        // Issue #6: keep the debug because the cache is invalid
+        $options['debug']     = true;
         $this->options        = $options;
     }