Fluid grid guides
Do not extend clearfix conditionally (odd things happen)
Guide settings tweaks
Force nested grids to fluid
Show warning when suitable gutter cannot be found
Add livereload.js as submodule
Stratum Gem. Added more options

install (force), update, remove
Version bump
README part 1
Stratum settings update
Removed Sass dependency in gem
Make Stratum settings !default so that they can be overriden from multiple SCSS files
Grid improvements

* Added class to centre columns
* Added subdivision classes (100%, 50%, 25% etc.)
* Fixed nested grid bugs
Added jekyll to Gemfile
Reduced the scope of guard watch file
Moved demo to Jekyll
Added BBC homepage layout case study.
Don't track Jekyll-generated _site