Graham bemethavinci The zip file is attached
This is using 'hosted files'
The folders are here just create the same folders then copy the individual file urls and upload them
http://foundation6.xtgem.com/css/
and
http://foundation6.xtgem.com/js/
Note the links are using the full 'verbose' versions not the 'minified' files
Added / to original relative links or pages don't work in folders !
This goes in _headtags
app.css is equivalent to global_stylesheet and is used to add custom css

<link rel="stylesheet" href="/css/foundation.css"> <link rel="stylesheet" href="/css/app.css">

And this goes at the bottom of the _footer

<script src="/js/vendor/jquery.js"></script> <script src="/js/vendor/what-input.js"></script> <script src="/js/vendor/foundation.js"></script> <script src="/js/app.js"></script>

or you can just use the cdn links plus a standard jquery link This goes in _headtags

<!-- Compressed CSS --> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/foundation/6.3.0/css/foundation.min.css">

And this goes at the bottom of the _footer

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script> <!-- Compressed JavaScript --> <script src="https://cdnjs.cloudflare.com/ajax/libs/foundation/6.3.0/js/foundation.min.js"></script>

As for the html of the demo page that is here
http://foundation6.xtgem.com/foundation.html.js
remove the .js after upload
I have not done any other tests as yet