Updated docs for new tag

Author: marshalltaylorSFE

README.md

@@ -45,6 +45,7 @@ Version History
 
 * [V_1.0.0](https://github.com/sparkfun/SparkFun_BME280_Arduino_Library/tree/V_1.0.0) - Public release.
 * [V_1.1.0](https://github.com/sparkfun/SparkFun_BME280_Arduino_Library/tree/V_1.1.0) - Pulled request to add decimal precision to readFloatPressure() and readFloatHumidity().
+* [V_1.2.0](https://github.com/sparkfun/SparkFun_BME280_Arduino_Library/tree/V_1.2.0) - Added ESP32 architecture directives to modify begin operation.
 
 License Information
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