Heat and cold triggers

You can now define heat and cold triggers:

{
  "bridge": {
    "name": "Ruuvi",
    "username": "CC:22:3D:E3:CE:30",
    "port": 51826,
    "pin": "031-45-154"
  },

  "description": "RuuviTag bridge",

  "accessories": [
    {
      "accessory": "Ruuvitag",
      "name": "Garden",
      "id": "ca67bf52ca12",
      "coldTrigger": {
        "value": 0,
        "name": "Below zero!"
      },
      "heatTrigger": {
        "value": 20,
        "name": "Nice and warm!"
      }
    },
    {
      "accessory": "Ruuvitag",
      "name": "Sauna",
      "id": "fa81b4c6a891",
      "heatTrigger": {
        "value": 70,
        "name": "Sauna ready!"
      }
    },
    {
      "accessory": "Ruuvitag",
      "name": "Refridgerator",
      "id": "ac67df12bb34",
      "heatTrigger": {
        "value": 6,
        "name": "Too warm!"
      },
      "coldTrigger": {
        "value": 2,
        "name": "Too cold!"
      }
    }
  ]
}