More fixes for Travis

Also add 3.4 for testing and a badge to the README

.travis.yml

@@ -3,7 +3,8 @@ python:
   - "2.6"
   - "2.7"
   - "3.3"
+  - "3.4"
 install:
-  - pip install tox unittest2
+  - pip install tox
 script:
   - tox -e $(echo py$TRAVIS_PYTHON_VERSION | tr -d . | sed -e 's/pypypy/pypy/')

README.rst

@@ -17,6 +17,10 @@ with Python.
 ----
 
 
+.. image:: https://travis-ci.org/collective/icalendar.svg?branch=master
+    :target: https://travis-ci.org/collective/icalendar
+
+
 Roadmap
 =======