fixed some typos
updated reference to new _global.scss file we added to remove default styles from global mixins, etc.
Merge branch 'master' of github.com:zurb/foundation
updated subheader variables to use correct name
updated visibility classes
updated changelog
updated path to new global file
Fix new section example.
[BUG] Forget a 0 or use another %

I think someone forgot a 0 or it needs to get replaced with another higher % cause 3% is to low to notice any difference.
Merge pull request #1705 from MekZii/master

top-bar :hoover fix (to low %)
Define standard initializer as well as assets initializer
Merge pull request #1711 from gkop/master

Define standard initializer as well as assets initializer
Merge branch 'master' of github.com:zurb/foundation into rails_assets_fix

Conflicts:
	lib/foundation/engine.rb