twbs/bootstrap — pull request #14072 by cvrebert (2014-07-08 03:11:41+00:00)
Title: Add screenreader text to prev/next carousel buttons in examples to improve accessibility

Refs #13556.
Per https://github.com/paypal/bootstrap-accessibility-plugin/blob/master/README.md#carousel
Credit: https://github.com/paypal/bootstrap-accessibility-plugin