fix #341 validate-json command (#342)

Author: remicollet

bin/validate-json

@@ -207,8 +207,8 @@ try {
     echo $e->getMessage() . "\n";
     exit(2);
 }
-$refResolver = new JsonSchema\RefResolver($retriever, $resolver);
-$schema = $refResolver->resolve($urlSchema);
+$refResolver = new JsonSchema\SchemaStorage($retriever, $resolver);
+$schema = $refResolver->resolveRef($urlSchema);
 
 if (isset($arOptions['--dump-schema'])) {
     $options = defined('JSON_PRETTY_PRINT') ? JSON_PRETTY_PRINT : 0;