[Checkins] [zopefoundation/grokcore.content] a6c1c7: Use Python 3.4 and 3.5 with tox in travis.yaml.

[GitHub]

  Branch: refs/heads/py3-compatibility
  Home:   https://github.com/zopefoundation/grokcore.content
  Commit: a6c1c750d869f21f3ecc7d30dd73b2a7c6e21e6a
      https://github.com/zopefoundation/grokcore.content/commit/a6c1c750d869f21f3ecc7d30dd73b2a7c6e21e6a
  Author: Steffen Allner <sa at gocept.com>
  Date:   2016-07-13 (Wed, 13 Jul 2016)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Use Python 3.4 and 3.5 with tox in travis.yaml.