Merge pull request #24 from ozamorowski/master

w() mixin in scss port.
Updated the holy crap out of the README
Updated doc to include offset()
Merge pull request #26 from ozamorowski/master

less output on w() mixin #25
Including all of nib by default
Fixed w() - last param forgot comma. Fixed w()'s centering function - forgot the !importants. Updated doc.
Fixed scss bp() and readme
Fixed LiveReload instructions
removed dupe "Lightweight"
typo
Merge remote-tracking branch 'upstream/master'