To create a Griffon application you first need to familiarize yourself with the usage of the `griffon` command which is used in the following manner:

    griffon [command name]

In this case the command you need to execute is create-app:

    griffon create-app demoConsole

This will create a new directory inside the current one that contains the project. You should now navigate to this directory in terminal:

    cd demoConsole