Update README.md
Minor CSS opitmizations (removed duplicate rules)
Replaced previous post arrow with SVG (PNG fallback for IE)
More super-nitpicky optimizations
Fixed line-height and spacing of lists in .post-content
Removed TODO and updated Changelog
Merge branch 'v0.9.2' into feature/grunt
added grunt-csscss to run CSSCSS which checks for redudancies in CSS.
running CSSCSS in verbose mode so it's easy to see which rules have been matched.