twbs/bootstrap — pull request #14485 by PeterDaveHello (2014-08-29 16:35:46+00:00)
Title: [DOC] add --depth for git clone in README

bootstrap almost has ten thousand commits, the cloning process may be a little bit slow, and usually we don't need the whole history unless we need to trace a bug or the source code, I think using shallow clone for depth=1 is enough for most of the users.

reference: http://git-scm.com/docs/git-clone