feat: add read.me

Author: kakopappa

examples/temperaturesensor/README.md

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+# Temperature Sensor Tutorials
+
+[Temperature Sensor Tutorial - DHT11 and DHT22, AM2302, RHT03](https://help.sinric.pro/pages/tutorials/temperature-sensors/temperature_sensor_dht)https://help.sinric.pro/pages/tutorials/temperature-sensors/temperature_sensor_dht)
+
+[Temperature Sensor Tutorial - DS18B20 and DS1822, DS1820, MAX31820, MAX31850](https://help.sinric.pro/pages/tutorials/temperature-sensors/temperature_sensor_DS18B20)