Corrected capitalization of !important to satisfy validators, whatever they might be.
Merge pull request #1244 from crazysim/correct-capitalization

Corrected capitalization of !important
Fixed Typo
Merge pull request #1246 from AJ-Acevedo/fixed-typo

Fixed Typos
Merge branch '2.1' of git://github.com/imathis/octopress
Update assets.