velopack/docs/getting-started.md

Quick Start (for the impatient)

1. Install-Package squirrel.windows
2. Use NuGet Package Explorer (or any other way) to create a NuGet package for your app.
3. Open the NuGet Package Console, and type Squirrel --releasify path/to/the/nuget/package.nupkg
4. In your app, from time to time run this code:

using (var mgr = new UpdateManager("https://path/to/my/update/folder", "nuget-package-id", FrameworkVersion.Net45)) {
    await mgr.UpdateApp();
}

You should have a folder called Releases with three files in it. Publish those all to S3 in the same folder and you've now got an installer.

What about shortcuts?

Every EXE in your package will automatically get a shortcut. If you don't want this to be the case, follow the steps for handling Squirrel events below.

Handling Squirrel events

Squirrel events are optional, but they can be super useful, as it gives you a chance to do "custom install actions" on install / uninstall / update. Most production applications will end up doing this, but simple applications can accept the default behavior without any problems.

Check out the article on Squirrel Events to get started.