Refined example
A few things

- Cleaned up comments
- Renamed div to border
- Removed useless helpers
- Added functions section
- Refined unit converter function
- Adjusted formatting slightly
Just a reconversion.

I may remove the final css files from the repo for this reason.
New conversion functions and more...

- New conversion functions px and t-unit for converting from one to the
other
- Remove clearfix default... I'll probably put this back in
- Added get-adj-row-w function to receive the row width minus the gutter
Wrap up

Just wrapping up the current changes before a big restart.
Starting fresh
Release

- There are no only two options: row and flow
- row: table layouts!
- flow: inline-block