twbs/bootstrap — pull request #10973 by DanielBaird (2013-10-08 03:32:11+00:00)
Title: Removed reference to gradient on button that no longer has a gradient :)

There was a HTML "comment" in the sample HTML for button styling, that referred to the default button as being grey with a gradient. I guess was left over from the old docs. I've removed the mention of grey and gradients in that HTML comment and just said it had "default colouring".