Use current Travis CI URL (#78)

Author: myint

README.rst

@@ -72,8 +72,8 @@ rebase your commits for you.
 
 All changes should be include tests and pass flake8_.
 
-.. image:: https://api.travis-ci.org/pyflakes/pyflakes.png
-   :target: https://travis-ci.org/pyflakes/pyflakes
+.. image:: https://api.travis-ci.org/PyCQA/pyflakes.svg
+   :target: https://travis-ci.org/PyCQA/pyflakes
    :alt: Build status
 
 .. _Pylint: http://www.pylint.org/