Improvements for IRMQTTServer example (#466)
Improvements for IRMQTTServer example (#466)

- Bump to v0.4
- Set the serial use to be TX-only. Freeing the RX pin for possible use.
- Protect against using debug output and TX pin for IR LED.
- Add comment suggestions for how to use this on an ESP-01 module.
- Display the version.
markszabo/IRremoteESP8266,markszabo/IRremoteESP8266,markszabo/IRremoteESP8266,markszabo/IRremoteESP8266