'required' property

[benmonro]

I want to render a little red * next to required fields. As far as I can tell the way to check this is like so:

        var required = locals.myInput.props.type.name !== 'Maybe';

It would be nice to instead just have a cleaner syntax like this:

  <div>{locals.myInput.props.type.required && <span>*</span>}</div>

[gcanti]

A more reliable way would be to test the meta object:

var required = ( type.meta.kind !== 'maybe' );

[gcanti]

Closing in favour of #210