How to add a Gitup File into Smartthings - Control ISY through Smartthings

Hello, I am trying to control my ISY system through SmartThings and came across this page:

I am pretty confused on the instructions and how to add the file to My Smart Apps. I tried “forking” the file and have the GitHub Integration enabled for my smarthings account. Is there a way to upload a zipfile into SmartThings?

Follow those instructions on how to upload the custom DTH and SmartApp.