grid pattern: remove duplicate media query, this was causing incorrect rendering of the bp3-grid
gemfile: upgrade jekyll to 1.5.1, remove guard-jekyll dependency, fixes #25
Improve first-run experience by making sure css is compiled on first run. Fixes #24
Add mixin to vertically center objects. Fixes #21
Add mixin to vertically center objects in their container. Fixes #21
Add @include block-skin mixin. See #19 and #14.
Give all buttons a .btn class in patterns
Give footer proper padding
Fix button references in CSS: also include input[type=submit]
Merge pull request #26 from getchopstick/feature-block-mixin

Add @include block-skin mixin. See #19 and #14.
Move word-break extend into _extends.scss
Remove “screen and” declaration from media query mixin
Fix typo in comments of vertical-center mixin