Merge branch 'sticky-docandtest-fix' of...

Merge branch 'sticky-docandtest-fix' of https://github.com/gehasia/foundation-sites into gehasia-sticky-docandtest-fix

* 'sticky-docandtest-fix' of https://github.com/gehasia/foundation-sites:
  Adding more tests
  Adding bottom margin information
  [Doc] Sticky : Add documentation about stick-to-bottom. Visual test fixed + stick-to-bottom test