Update to support slideOptions in the YAML metadata

lib/response.js

@@ -555,6 +555,7 @@ function showPublishSlide(req, res, next) {
                 title: title,
                 description: meta.description,
                 slides: slides,
+                slideOptions: JSON.stringify(meta.slideOptions || {}),
                 GA: meta.GA,
                 useCDN: config.usecdn
             };