How To Properly Upgrade from Mint 17.1 (Rebecca) To Linux Mint 17.2 (Rafaela)

sudo apt-get update
sudo apt-get dist-upgrade
sudo cp /etc/apt/sources.list.d/official-package-repositories.list{,.bak}
sudo sed -i 's/rebecca/rafaela/g' /etc/apt/sources.list.d/official-package-repositories.list
sudo apt-get update
sudo apt-get dist-upgrade