dropdown initial test

public/_includes/_version-dropdown.jade

@@ -10,6 +10,27 @@ if language == 'dart'
   if version == "latest"
     title = 'Dart ' + dartLatest
 
+
+filter = /(\.html$)/
+replace = /(\.html$)|(^index\.html$)/
+
+mixin tree(head, tail)
+  for val, key in head
+    if key !== '.git' && key !== '_data'
+      if key == '_contents'
+        each file in val
+          if filter.test(file) && !/^404\.html/.test(file)
+            - file = file.replace(replace, "");
+            li: a(href="#{ tail + file }")= tail + file
+      else
+        mixin tree(val, tail + key + "/")
+
+h1 Sitemap
+ol
+mixin tree(public, "/")
+
+
+
 h2.hero-subtitle.text-subhead
   button(md-button ng-click="showVersionMenu($event)") #{title}  <span class="icon-arrow-drop-down"></span>