Update README.md for release v2.0.0-mcci

Author: terrillmoore

README.md

@@ -16,7 +16,7 @@ For general info, we suggest you check the stmm32duino [README.md](https://githu
 
 ## Latest release
 
-[![GitHub release](https://img.shields.io/github/release/mcci-catena/Arduino_Core_STM32.svg)](https://github.com/mcci-catena/Arduino_Core_STM32/releases/latest) [![GitHub commits](https://img.shields.io/github/commits-since/mcci-catena/Arduino_Core_STM32/latest.svg)](https://github.com/mcci-catena/Arduino_Core_STM32/compare/v1.0.6-mcci...master)
+[![GitHub release](https://img.shields.io/github/release/mcci-catena/Arduino_Core_STM32.svg)](https://github.com/mcci-catena/Arduino_Core_STM32/releases/latest) [![GitHub commits](https://img.shields.io/github/commits-since/mcci-catena/Arduino_Core_STM32/latest.svg)](https://github.com/mcci-catena/Arduino_Core_STM32/compare/v2.0.0-mcci...master)
 
 ## Getting Started