added variables.scss

a comprehensive list of all the default variables so that you can easily override them on each project.
Fixed wrong check for reveal css-top property.
add app.scss to compass upgrade manifest
Fix breadcrumbs first element bug

See issue #1876 and #415 for more information. 

The first element is out of breadcrumbs is not inline with the
supplemental elements in the list.
convert strings that are actually numbers into numbers
Merge pull request #1906 from jsmestad/patch-1

Fix breadcrumbs first element bug
add missing data-options functionality to orbit
Merge branch 'master' of github.com:zurb/foundation
updated
Merge branch 'master' of github.com:zurb/foundation into bug-fixing
use markdown version of CHANGELOG instead of duplicating it
updating topbar fixed bug
Adding Drupal theme - Zoundation - to README
updated changelog
added docs about using data-options with orbit
Merge branch 'master' of github.com:zurb/foundation
bump version to 4.0.6
updated top-bar fixed
made top-bar go to normal position when 'fixed' and clicked
Merge branch 'master' of github.com:zurb/foundation into bug-fixing