[Checkins] [zopefoundation/z3c.schema] 5607cb: Try pip caching on travis.

[GitHub]

  Branch: refs/heads/travis-cache
  Home:   https://github.com/zopefoundation/z3c.schema
  Commit: 5607cb3777229cd6bf26e6770ddf4c9e43d3f9b9
      https://github.com/zopefoundation/z3c.schema/commit/5607cb3777229cd6bf26e6770ddf4c9e43d3f9b9
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2016-09-12 (Mon, 12 Sep 2016)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Try pip caching on travis.