Code review comment for lp:~jameinel/bzr/1.18-switch-branch

from the commit comment:
  'bzr switch -b' can now be used to create the branch while you switch to it.

  This is just a convenience thing, but it shortens:
    bzr branch . ../new-branch
    bzr switch ../new-branch
  into a single:
    bzr switch -b ../new-branch