Update README.md

Author: TobiasRoeddiger

README.md

@@ -2,6 +2,7 @@
 
 # Setup
 - Install Visual Studio Code
+- Install nRF-Util and add to your PATH https://www.nordicsemi.com/Products/Development-tools/nRF-Util
 - Install the nRF Connect for VS Code extension and all of its dependencies
 - Open the nRF Connect tab in VC Code and "Install Toolchain", Install version 3.0.1
 - In the nRF Connect tab in VS Code select "Manage SDK" and install SDK version 3.0.1