If you would like to use github.py, you'll need to install github3.py and its dependencies (which, sadly, do not have a Raspbian package). I installed it like this:
sudo apt-get install libffi-dev
sudo apt-get install python-setuptools
sudo easy_install pip
sudo pip install --pre github3.pyYou'll also need to install sqlite3 in order to use github.py:
sudo apt-get install sqlite3