Xiaomi sensors/appliances

This is great - thanks for posting it up separately to your other stuff! I've been meaning to try one of those Xiaomi Plant moisture sensors for ages, and this gives me a good excuse :)

If you're interested, you should be able to change the last part of NRF.findDevices to:

        }, {
            filters: [
                {serviceData:{"fe95":{}}}
            ],
            timeout: 2000
        }

which will automatically filter out only devices that advertise that service data - it's a bit faster and more efficient with memory if there are a bunch of BLE devices.