Fix text color for buttons in Top Bar

When a button is used inside Top Bar, the text color was always getting set to the link color. However, a better default would be to use the button-style mixin from buttons.scss in order to determine what the best text color would be.
Added radius class to Reveal

If you add a radius class to reveal, it will inherit from global-radius by default.
Revert "Added radius class to Reveal"

This reverts commit 7d867e1dd1568210f91e9f7f99c4965d2e4ac711.
Merge branch 'master' of https://github.com/zurb/foundation
Revert "changes to master"

This reverts commit 4ca53900427da1b71b033e65116c27ca2fb61fee.
Merge branch 'master' of https://github.com/joeworkman/foundation
Merge branch 'master' of https://github.com/zurb/foundation
Merge branch 'master' of https://github.com/joeworkman/foundation
Never miss a verion number again!

Updated grunt to use the version inside the package.json file and populate all of the built source files.

new package added: grunt-string-replace

There was also one small syntax issue in docs.scss that was causing the        build to fail. Fixed that.
Revert package.json

reverted some of the non-required changes made to package.json to see if it will fix the build.
Merge pull request #5579 from joeworkman/string-replace-version

Never miss a verion number again!