Auto merge of #2810 - munyari:jobs, r=alexcrichton
authorbors <bors@rust-lang.org>
Tue, 28 Jun 2016 23:42:33 +0000 (16:42 -0700)
committerGitHub <noreply@github.com>
Tue, 28 Jun 2016 23:42:33 +0000 (16:42 -0700)
Update help for build to show number of jobs (#2805)

This addresses #2805


Trivial merge