[Checkins] [zopefoundation/ZConfig] 2f638e: Enable code coverage metrics on CI

[GitHub]

  Branch: refs/heads/coverage
  Home:   https://github.com/zopefoundation/ZConfig
  Commit: 2f638e1a725fc5abd556a002ea0c8039ea6a51bc
      https://github.com/zopefoundation/ZConfig/commit/2f638e1a725fc5abd556a002ea0c8039ea6a51bc
  Author: Jason Madden <jamadden at gmail.com>
  Date:   2017-02-11 (Sat, 11 Feb 2017)

  Changed paths:
    M .gitignore
    M .travis.yml
    M setup.cfg
    M setup.py
    M tox.ini

  Log Message:
  -----------
  Enable code coverage metrics on CI

Also enable pip caching on CI