made parsing classes disabled by default

lib/ApkParser/Config.php

@@ -32,7 +32,7 @@ public function __construct(array $config = array())
         $this->config = array_merge(array(
             'tmp_path'      => sys_get_temp_dir(),
             'jar_path'      => __DIR__ . '/Dex/dedexer.jar',
-            'manifest_only' => false
+            'manifest_only' => true
         ), $config);
     }