Update to Foundation 5.4. Change Two Column style from 'small-6' to 'small-12 medium-6'.

git-svn-id: https://plugins.svn.wordpress.org/wp-foundation-5-styles/trunk@972769 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update to Foundation 5.4. Change Two Column style from 'small-6' to 'small-12 medium-6'.

git-svn-id: https://plugins.svn.wordpress.org/wp-foundation-5-styles/trunk@972770 b8457f37-d9ea-0310-8a92-e5e31aec5664