[Checkins] [zopefoundation/Missing] 4f8481: Speed up Travis start via 'sudo: false'.

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Missing
  Commit: 4f8481a1a7b1f6491a59a3977537c09d9d1c3e2b
      https://github.com/zopefoundation/Missing/commit/4f8481a1a7b1f6491a59a3977537c09d9d1c3e2b
  Author: Tres Seaver <tseaver at palladion.com>
  Date:   2014-12-18 (Thu, 18 Dec 2014)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Speed up Travis start via 'sudo: false'.

See: http://blog.travis-ci.com/2014-12-17-faster-builds-with-container-based-infrastructure/