Configuration to run coveralls on py33

.travis.yml

@@ -6,6 +6,7 @@ env:
     - TOXENV=py32
     - TOXENV=py33
 install:
-    - pip install --quiet --use-mirrors tox
+    - pip install --quiet --use-mirrors tox coveralls
 script:
     - tox
+    - if [ $TOXENV == "py33" ]; then coveralls; fi