IDF component badge

Author: pschatzmann

README.md

@@ -2,6 +2,7 @@
 
 [![Arduino Library](https://img.shields.io/badge/Arduino-Library-blue.svg)](https://www.arduino.cc/reference/en/libraries/)
 [![License: Apache 2.0](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
+[![IDF Component](https://img.shields.io/badge/IDF-Component-blue.svg)](https://github.com/pschatzmann/ESP32-A2DP)
 
 
 The ESP32 is a microcontroller that provides an API for Bluetooth A2DP which can be used to receive sound data e.g. from your Mobile Phone and makes it available via a callback method. The output is a PCM data stream, decoded from SBC format. The documentation can be found [here](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/i2s.html).