Add a Travis badge for the master branch

diff --git a/.github/CONTRIBUTING.rst b/.github/CONTRIBUTING.rst
index c64187b32cf40b6fe1b691c209e2eddf03f9a87b..d3a1b88d83fba52a498a5b29bb0b8a66bcd8dc6f 100644 (file)
--- a/.github/CONTRIBUTING.rst
+++ b/.github/CONTRIBUTING.rst
@@ -6,6 +6,8 @@ Build Status
 
 - master
 
+  + .. image:: https://travis-ci.org/python/cpython.svg?branch=master
+       :target: https://travis-ci.org/python/cpython
   + `Stable buildbots <http://buildbot.python.org/3.x.stable/>`_
 
 - 3.6