[python-control-developers] [python-control/python-control] a6a75d: Update README to trigger Readthedocs

[Richard M. <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/python-control/python-control
  Commit: a6a75dc94e71929b5a2b80069032e2df7f69c48f
      https://github.com/python-control/python-control/commit/a6a75dc94e71929b5a2b80069032e2df7f69c48f
  Author: Richard Murray <mu...@cd...>
  Date:   2019-04-10 (Wed, 10 Apr 2019)

  Changed paths:

  Log Message:
  -----------
  Update README to trigger Readthedocs

Small change to see if Readthedocs webhook is working.