revamp grids manual test
Merge pull request #169 from tilomitra/grids-test

revamp grids manual test
Remove -webkit-font-smoothing: antialised
Fix image resizing to be proportional

Images inside .pure-g-r when resized didn't change their height. Fix this by adding setting their height to 'auto'.
Merge pull request #170 from dchest/patch-1

Remove -webkit-font-smoothing: antialiased
Add HISTORY entry for removal of `-webkit-font-smoothing` from Buttons
add responsive images to grids manual test
add HISTORY.md entry for #172
Merge pull request #172 from dchest/patch-2

Fix image resizing to be proportional
Merge branch 'grids-tests-image'