Update Travis configuration, and the wheel badge

Author: florentx

.travis.yml

@@ -7,7 +7,7 @@ python:
   - pypy
 install:
   - pip install -e .
-  - pip freeze
+  - pip list
 script:
   - python pep8.py --testsuite testsuite
   - python pep8.py --statistics pep8.py

README.rst

@@ -82,7 +82,7 @@ Links
    :target: https://travis-ci.org/jcrocholl/pep8
    :alt: Build status
 
-.. image:: https://pypip.in/wheel/pep8/badge.png
+.. image:: https://pypip.in/wheel/pep8/badge.png?branch=master
    :target: https://pypi.python.org/pypi/pep8
    :alt: Wheel Status
 

docs/developer.rst

@@ -14,7 +14,7 @@ conditions of the :ref:`Expat license <license>`.  Fork away!
 * `Source code <https://github.com/jcrocholl/pep8>`_ and
   `issue tracker <https://github.com/jcrocholl/pep8/issues>`_ on GitHub.
 * `Continuous tests <http://travis-ci.org/jcrocholl/pep8>`_ against Python
-  2.5 through 3.3 and PyPy, on `Travis-CI platform
+  2.6 through 3.3 and PyPy, on `Travis-CI platform
   <http://about.travis-ci.org/>`_.
 
 .. _available on GitHub: https://github.com/jcrocholl/pep8