title: file to import not found or unreadable: util/util in my switch from foundation 5 to foundation 6
body: <p>I used to use foundation 5 which uses compass to do the sass thing. but now i switch to foundation 6, I always cannot make it right. when running gulp,it show error:</p>
  
  <pre><code>file to import not found or unreadable: util/util
  </code></pre>
  
  <p>there is one answer i found here:<a href="http://foundation.zurb.com/forum/posts/36389-what-is-import-utilutil" rel="nofollow">http://foundation.zurb.com/forum/posts/36389-what-is-import-utilutil</a>, which says foundation 6 use libsass, but i donot know libsass and do want to use compass since i have used commpass mixins and function the like in my project already.  and i tried the ways they said but not succeed.
  anyone know how to use foundation 6 using compass? btw, i use command line to generate the foundation project with all the tools i need and then I copy and paste my old project using foundation 5 and grunt into the new foundation 6 Folder. Thanks.</p>