Support form input prop name

[smblee]

For all the form related components (radio group, switch) the react version supports the prop name for use in form element. Is there a way to get this working somehow - or does this need to be supported by the lib?

[jacktho]

@smblee Until #121 gets sorted, you can manually do it yourself. Add a hidden input like so: <input type="hidden" {name} {value} />

Make sure value is bound to both that input and the appropriate component like RadioGroup.