Fix error in new options

example.json

@@ -2,7 +2,8 @@
   "input": "example/media",
   "output": "_site",
   "title": "Photo gallery",
-  "thumbSize": 120,
-  "largeSize": 400,
+  "thumb-size": 120,
+  "large-size": 400,
+  "sort-folders": "date",
   "css": null
 }

src/view-model.js

@@ -11,7 +11,7 @@ exports.build = function(metadata, opts) {
       path: file,
       name: path.basename(file),
       video: data.mediaType === 'video',
-      size: opts['thumb-size'],
+      size: opts.thumbSize,
       urls: urls(file, data)
     }
   }

src/website.js

@@ -11,7 +11,7 @@ exports.build = function(metadata, opts, callback) {
 
   function website(callback) {
 
-    var galleries = viewModel.build(metadata, opts.thumbSize);
+    var galleries = viewModel.build(metadata, opts);
 
     var style = opts.css ? path.basename(opts.css) : null;