Update README.md

**controller_send_service** (Required): ......<br />

**temperature_sensor** (Optional): **entity_id** for a temperature sensor<br />

**humidity_sensor** (Optional): **entity_id** for a humidity sensor<br />

#### Example:

```yaml

climate:

  - platform: smartir

    name: Office AC

    device_id: 1000

    controller_send_service: switch.broadlink_send_packet_192_168_10_59

    temperature_sensor: sensor.temperature

    humidity_sensor: sensor.humidity

```