[Python-checkins] [python/cpython] 3f9339: Add a Travis badge for the master branch

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/python/cpython
  Commit: 3f9339b569b09e8999d84ac80c921f2633f56307
      https://github.com/python/cpython/commit/3f9339b569b09e8999d84ac80c921f2633f56307
  Author: Brett Cannon <brettcannon at users.noreply.github.com>
  Date:   2017-02-10 (Fri, 10 Feb 2017)

  Changed paths:
    M .github/CONTRIBUTING.rst

  Log Message:
  -----------
  Add a Travis badge for the master branch