Update _block-grid.scss

Adds a variable $block-grid-media-queries to control whether class styles are processed. For those who are only using mixins to define grid behavior, this may be set to false to lighten the output file.
Update block-grid.html.erb

Added new $block-grid-media-queries variable to documentation.
update typography styles to change from small to large breakpoint a bit. Mostly headers
missed an  variable to correctly calculate button groups, fixes #1637
Fix typos on javascript documentation.
Merge pull request #1646 from phildiaz/patch-2

Update block-grid.html.erb
Merge pull request #1644 from phildiaz/patch-1

Update _block-grid.scss
merge conflicts.
Remove bang from section.js due to IE8 issues.
updated getting started project copy
updated getting started again to match
Merge branch 'master' of github.com:zurb/foundation
update docs compile script
Merge branch 'master' of github.com:zurb/foundation
updated settings, fixed #1631
Merge branch 'master' of github.com:zurb/foundation
added contain-to-grid styles back in, fixes #1628
added foundation-global to compass project settings file
updated app.scss and settings file for compass project
Remove console.log