twbs/bootstrap — pull request #12052 by francis-liberty (2014-01-01 04:46:53+00:00)
Title: add keyboard support for carousel.

support key arrow left, right, up, down, corresponding to slide action prev, next, first and last.
a live demo can be accessed at [jsbin](http://jsbin.com/eneRULi/2/)
not support focus only yet. Any heads up would be great, I'm not so familiar with DOM events/states just yet.