Merge pull request #1578 from iKevinY/shields-badges

Use Shields.io as source for Travis badge

README.rst

@@ -55,7 +55,7 @@ See our `contribution submission and feedback guidelines <CONTRIBUTING.rst>`_.
 .. _`Pelican documentation`: http://docs.getpelican.com/
 .. _`Pelican's internals`: http://docs.getpelican.com/en/latest/internals.html
 
-.. |build-status| image:: https://travis-ci.org/getpelican/pelican.svg?branch=master
+.. |build-status| image:: https://img.shields.io/travis/getpelican/pelican/master.svg
    :target: https://travis-ci.org/getpelican/pelican
    :alt: Travis CI: continuous integration status
 .. |coverage-status| image:: https://img.shields.io/coveralls/getpelican/pelican.svg