Update README.md

Added UnlockECU

Author: hexsecs

README.md

@@ -307,6 +307,7 @@ Libraries and tools that don't fall under the larger class of applications above
 - [High Level ViWi Service](https://github.com/iotbzh/high-level-viwi-service) - High level Volkswagen CAN signaling protocol implementation.
 - [CanCat](https://github.com/atlas0fd00m/CanCat) - A "swiss-army knife" for interacting with live CAN data. Primary API interface in Python, but written in C++.
 - [CANdevStudio](https://github.com/GENIVI/CANdevStudio) - Development tool for CAN bus simulation. CANdevStudio enables to simulate CAN signals such as ignition status, doors status or reverse gear by every automotive developer.
+- [UnlockECU](https://github.com/jglim/UnlockECU) - Free, open-source ECU seed-key unlocking tool.
 
 ### Java
 - [ITS Geonetworking](https://github.com/alexvoronov/geonetworking) - ETSI ITS G5 GeoNetworking stack, in Java: CAM-DENM / ASN.1 PER / BTP / GeoNetworking