Update README.md

README.md

 # UNL ECEN OLED Keychain Project
 ![Keychain](assets/keychain.jpg)
 
+# Prerequisites
+Install [Visual Studio Code](ms-windows-store://pdp/?productid=XP9KHM4BK9FZ7Q) if not already installed.
+
+
+
 # Cloning the repo
 
 ```
 git clone --recurse-submodules https://git.unl.edu/pscalise2/py32-keychain.git
 ```
 
-# Run the setup Puya 32 Environment Setup script
+# Run the setup Puya 32 Environment Setup script (Windows)
 First, open Windows Powershell in *Administrator Mode*. This script will install all of the dependencies for the building, flashing, and debugging of the py32f030x8, and the other PY32 chipsets.
 
 ```