[Checkins] [zopefoundation/zope.app.publisher] c6db96: Stop using deprecated --use-mirrors

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/zope.app.publisher
  Commit: c6db96ea2a810d9d53440effe6165bd1d9b93f9b
      https://github.com/zopefoundation/zope.app.publisher/commit/c6db96ea2a810d9d53440effe6165bd1d9b93f9b
  Author: Marius Gedminas <marius at gedmin.as>
  Date:   2015-11-08 (Sun, 08 Nov 2015)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Stop using deprecated --use-mirrors