Update examples to use unit

Author: hobinjk

examples/PlatformIO/BME280/src/BME280.cpp

@@ -45,9 +45,9 @@
 
 WebThingAdapter* adapter;
 
-const char* bme280Types[] = {nullptr};
+const char* bme280Types[] = {"TemperatureSensor", nullptr};
 ThingDevice weather("bme280", "BME280 Weather Sensor", bme280Types);
-ThingProperty weatherTemp("temperature", "", NUMBER, nullptr);
+ThingProperty weatherTemp("temperature", "", NUMBER, "TemperatureProperty");
 ThingProperty weatherHum("humidity", "", NUMBER, nullptr);
 ThingProperty weatherPres("pressure", "", NUMBER, nullptr);
 
@@ -122,6 +122,7 @@ void setup() {
   digitalWrite(LED_BUILTIN, PIN_STATE_HIGH);
   adapter = new WebThingAdapter("weathersensor", WiFi.localIP());
 
+  weatherTemp.unit = "c";
   weather.addProperty(&weatherTemp);
   weather.addProperty(&weatherPres);
   weather.addProperty(&weatherHum);