Trick question. It's not a thing. It's this guy:
Basically, he wears a top hat, lives in your computer, and waits for you to tell him what kind of application you wish to create.
Not every new computer comes with a Yeoman pre-installed. He lives in the npm package repository. You only have to ask for him once, then he packs up and moves into your hard drive. Make sure you clean up, he likes new and shiny things.
npm install -g yo
npm install -g generator-werx
Generates skeleton CRUD including a controller, model, validator and view files.
Generates an Eloquent model in src/models
Generates a controller in src/controllers
Generates a console only controller in src/controllers
Generates a validator in src/validators