properly use the local draco assembly

source/server/templates/explorer.hbs

 
-<voyager-explorer resourceroot="/dist/" root="/scenes/{{scene}}/" referrer="{{referrer}}" lang="{{lang}}"></voyager-explorer>
+<voyager-explorer resourceroot="/dist/" dracoRoot="/dist/js/draco/" root="/scenes/{{scene}}/" referrer="{{referrer}}" lang="{{lang}}"></voyager-explorer>
 <script type="text/javascript" src="/dist/js/voyager-explorer.js"></script>

source/server/templates/story.hbs

 
-<voyager-story resourceRoot="/dist/" root="/scenes/{{scene}}/" referrer="{{referrer}}" lang="{{lang}}" mode="{{mode}}"></voyager-story>
+<voyager-story resourceRoot="/dist/" dracoRoot="/dist/js/draco/" root="/scenes/{{scene}}/" referrer="{{referrer}}" lang="{{lang}}" mode="{{mode}}"></voyager-story>
 <script type="text/javascript" src="/dist/js/voyager-story.js"></script>
 <link rel="stylesheet" href="/dist/css/voyager-story.css">
\ No newline at end of file