Pygments 2.0.2 does now requires python >= 3.3

Trying an older version

.travis.yml

 
 before_install:
     - pip --quiet install docutils
-    - pip --quiet install Pygments
+    - pip --quiet install Pygments==1.6
     - pip --quiet install coverage
     - coverage --version
     - sudo apt-get --quiet=2 install patchutils