We'll use the app.component
function to make a component and add it to our template. We'll pass through props
into the component and use these to initialize the state of our component.
In this component, we'll accept data with the props
key, display the data with the template
key and bind data in our data
key in our component config object. By doing so we'll be able to select the number of tickets that we would like to buy at each ticket type level.