[Checkins] [zopefoundation/Zope] 4f91aa: Suggest not to use venv activation.

[Michael Howitz]

  Branch: refs/heads/master
  Home:   https://github.com/zopefoundation/Zope
  Commit: 4f91aa8e005b0b30ad2cfe3c467a9a34a72badc5
      https://github.com/zopefoundation/Zope/commit/4f91aa8e005b0b30ad2cfe3c467a9a34a72badc5
  Author: Michael Howitz <mh at gocept.com>
  Date:   2019-06-25 (Tue, 25 Jun 2019)

  Changed paths:
    M docs/INSTALL.rst

  Log Message:
  -----------
  Suggest not to use venv activation.

Closes #660.

[skip ci]