v2.1.0

Quick release to capture the commits added after the v2 release.

Preboot 2

Complete re-engineering of the project. Highlights include:

• A plethora of useful and customizable variables including grayscale and semantic colors like @black-50 and @brand-success, scaffolding settings like @body-background and @link-color, and typographic shortcuts for font stacks, sizes, headings, and more.
• A powerful, semantic, and mobile-first grid system to create your own layouts with ease with just three mixins: .make-row(), .make-column(), and .make-column-offset().
• Several vendor-prefix mixins to streamline writing of common CSS3 functions like transitions, gradients, and more.
• Several utility mixins for reusing common snippets of code like .clearfix(), .text-truncate(), and more.

Bootstrap.less (Preboot 1)

Tagging the latest code as v1 for archiving purposes ahead of the Preboot 2 launch.