Added `tab-size` property to `pre` element

https://github.com/cferdinandi/kraken/issues/12
Added `word-break` property to `a` element

https://github.com/cferdinandi/kraken/issues/5
Updated CSS Reset with new features from Normalize.css

https://github.com/cferdinandi/kraken/issues/8
Updated CSS with new features from Normalize.css

https://github.com/cferdinandi/kraken/issues/8
Removed IE7- hacks

https://github.com/cferdinandi/kraken/issues/7
Updated grid for better performance

https://github.com/cferdinandi/kraken/issues/9
Converted from spaces to tabs

https://github.com/cferdinandi/kraken/issues/11
Fixed `vertical-align` issue in form styling

https://github.com/cferdinandi/kraken/issues/13
Merge branch 'wip-6'