Switch to nodered recommended install steps
Switch to nodered recommended install steps

`bluetooth-hci-socket` requires a modern node, this means we cannot use the nodered package and must use their alternative install instructions instead. See http://nodered.org/docs/hardware/raspberrypi.html#manual-install
tomgidden/EspruinoHub,tomgidden/EspruinoHub,tomgidden/EspruinoHub