[Checkins] [zopefoundation/cipher.session] 57ba32: Use tox for testing in Travis

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/cipher.session
  Commit: 57ba324cbc9f3abe7733a11e87712d571f062987
      https://github.com/zopefoundation/cipher.session/commit/57ba324cbc9f3abe7733a11e87712d571f062987
  Author: Marius Gedminas <marius at gedmin.as>
  Date:   2014-12-23 (Tue, 23 Dec 2014)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  Use tox for testing in Travis

This way I don't have to repeat the hack of using a local repoze.session
tarball for Python 3 support for the 3rd time (the other two are in
buildout.cfg and tox.ini).