navigation fix
Merge branch 'master' of https://github.com/Kunstmaan/cupcake

* 'master' of https://github.com/Kunstmaan/cupcake:
  comment bourbon
added bg color variable to nav-item-link
Merge branch 'master' into develop

* master:
  navigation fix
  comment bourbon
Merge branch 'develop' of https://github.com/Kunstmaan/cupcake into develop

* 'develop' of https://github.com/Kunstmaan/cupcake:
  update modal example to use bootstrap functionality