Overwrite registered models

Sometime we need to pass our own fields or overwrite existing ones, nothing simpler! You can pass extra options object with custom fields

fixtureFactory.register('user', {
    type: 'admin',
    firstName: 'name.firstName',
 });

fixtureFactory.generateOne('user',{
    type: 'superadmin',
	  why: 'because'
});

expect

{
 type: 'superadmin',
 firstName: <generated first name>,
 why: 'because'
}