BS Examples — Autoprefixer: Gradient has outdated direction syntax.

Created by: kkirsche

Running "autoprefixer:examples" (autoprefixer) task
>> autoprefixer: /home/travis/build/twbs/bootstrap/docs/examples/justified-nav/justified-nav.css:41:3: Gradient has outdated direction syntax. New syntax is like "to left" instead of "right".

This is caused by a change in the W3C standard of linear-gradient where top should be to bottom for clarity reasons