Note that you will need to install the lastest full version of Raspbian, don't use the Lite version. Execute the following command on your Raspberry Pi to install MagicMirror²: To install MagicMirror² we executed the following command on the rasbian terminal
bash -c "$(curl -sL https://raw.githubusercontent.com/MichMich/MagicMirror/master/installers/raspberry.sh)"