Switching to tmux instead of screen

setup.sh

@@ -20,7 +20,7 @@ sudo mv hostname /etc/hostname
 echo "Setting up networking"
 sudo mv interfaces /etc/network/interfaces
 sudo apt-get update
-sudo apt-get -y install python-dev htop screen sqlite3
+sudo apt-get -y install python-dev htop tmux sqlite3
 
 echo "Setting up USB Drive"
 sudo mkdir /mnt/usb