Passing GetRandom through builder functions?

[pjmagee]

I've always found the GetRandom to be hidden away and not really felt like part of the API that makes NBuilder so special. What about an override of our builder functions where we can pass in an instance of a generator, e.g

Builder<Person>().CreateListOfSize(10)
.With(x => x.Name, (g) => g.FirstName())
.With(x => x.LastName, (g) => g.LastName())
.With(x => x.Age, (g) => g.Birthday())
.With(x => x.PostCode, (g) => g.PostCode())

[PureKrome]

Nice idea! Totally agree re: GetRandom which was why I created #46