some sample xml for testing
refacorted to work both in Python 2 and 3
updated travis status images
[ci skip]
adjusted build status images for branches
fixed flake error
adjusted travis config
no travis notifications (they suck, sorry)
added six to setup.py
cache the apt-get packages
updated documentation
[skip ci]
separate email command and a test management command for sending a test mail
now using refactored email function in notifications
Merge remote-tracking branch 'origin/master' into python3
catching an exception that was found on a Python 3.3 system