Add message at the end of setup script

setup.sh

@@ -96,5 +96,6 @@ echo "* reboot the SBC"
 echo "And perhaps:"
 echo "* set a new password for $user"
 echo "* set htop at your convenience"
+echo "* connect to Wi-Fi network"
 echo "* remove password for sudo" # TODO we should automate that, with a flag
 exit 0