[Checkins] [zopefoundation/Persistence] e944c8: Enable travis caching of pip/eggs

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Persistence
  Commit: e944c8a2ad52fc8d980b8d02d04c2023c99454b1
      https://github.com/zopefoundation/Persistence/commit/e944c8a2ad52fc8d980b8d02d04c2023c99454b1
  Author: Hanno Schlichting <hanno at hannosch.eu>
  Date:   2016-04-04 (Mon, 04 Apr 2016)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Enable travis caching of pip/eggs