Update README.md

Author: xwings

README.md

@@ -28,6 +28,7 @@ Qiling also made its way to various international conferences.
 2020:
 - [Black Hat, Europe](https://www.blackhat.com/eu-20/arsenal/schedule/index.html#qiling-framework-deep-dive-into-obfuscated-binary-analysis-21781)
 - [Black Hat, USA](https://www.blackhat.com/us-20/arsenal/schedule/index.html#qiling-framework-from-dark-to-dawn-----enlightening-the-analysis-of-the-most-mysterious-iot-firmware--21062)
+- [Black Hat, USA (Demigod)](https://www.blackhat.com/us-20/briefings/schedule/#demigod-the-art-of-emulating-kernel-rootkits-20009)
 - [Black Hat, Asia](https://www.blackhat.com/asia-20/arsenal/schedule/index.html#qiling-lightweight-advanced-binary-analyzer-19245)
 - [Hack In The Box, Lockdown 001](https://conference.hitb.org/lockdown-livestream/)
 - [Hack In The Box, Lockdown 002](https://conference.hitb.org/hitb-lockdown002/virtual-labs/virtual-lab-qiling-framework-learn-how-to-build-a-fuzzer-based-on-a-1day-bug/)