Hello World Pro
Vapor 3 is currently in beta, so the check script will still say "compatible with Vapor 2". Don't worry! As long as you have the 4.1 toolchain installed in Xcode you should be fine.
If you have any trouble with changes in the current beta version of Vapor, the best place to seek help is the Vapor Slack.
Learn how to create your first Vapor app by installing the Vapor toolbox and building your first routes.