I apologize for the late reply, I don't get on here very often.
I uploaded the entire project to Github, but the only file users need is this: https://github.com/xadamxk/USB-Rubber-Ducky-App/blob/master/RubberDuckyApp/bin/Debug/RubberDuckyApp.exe
EDIT: After the page loads, click the "Raw" button to download the .exe