Publish to SharePoint

Publish using ClickOnce and deploy using SharePoint
Add a Document Library
Create a new folder
Select (Actions > Open with Explorer)
Copy the URL into the following folders:
Publishing Folder Location - \\website.com\sites\name\folder
Installation Folder URL - website.com/sites/name/folder/

Click Prerequisities and untick "Create setup program in install prerequisite components"
Select (Build > Publish)

This should create a file at the top level (extension .vsto)
and a subfolder called "Application Files"