[Checkins] [zopefoundation/zope.schema] 0fe956: Use 'tox' on Travis.

[GitHub]

  Branch: refs/heads/test-docs-build-on-travis
  Home:   https://github.com/zopefoundation/zope.schema
  Commit: 0fe956d7f3842ba4b2484da03d7b8872266ffe66
      https://github.com/zopefoundation/zope.schema/commit/0fe956d7f3842ba4b2484da03d7b8872266ffe66
  Author: Tres Seaver <tseaver at palladion.com>
  Date:   2016-09-14 (Wed, 14 Sep 2016)

  Changed paths:
    M .travis.yml

  Log Message:
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  Use 'tox' on Travis.

Get 'coverage' and 'docs' tested there too.