Configure Zurb Foundation
Had to sort out how to get the asset pipeline working with Rails engine
Referenced this Stack Overflow issue:
http://stackoverflow.com/questions/13630456/sass-import-directive-when-used-in-rails-engine-cant-find-assets-in-plugins/13631079#13631079
tldr;
Put asset gems in Gemfile but don't place into groups as these don't
get required by default in the dummy app's application.rb file