twbs/bootstrap — pull request #15426 by cvrebert (2014-12-22 22:55:36+00:00)
Title: Remove holder.js references from syntax-highlighted example HTML

Our use of Holder.js in the docs is a mere implementation detail.
We don't want to confuse people into thinking Holder.js is somehow required by the Thumbnail component.
X-Ref: http://stackoverflow.com/questions/27602616/how-to-load-my-images-using-holder-js-bootstrap