Item lists example

[stappersg]

New file: examples/item_lists.rs, compiles
New file: examples/journey.yaml, item_lists can't read it.

Included / commited for getting help on getting it working.

[tailhook]

I would help faster if you provide an error message. Most likely the issue is that validator should use a sequence of scalars rather than a scalar:

fn validator() -> Structure<'static> {
    Structure::new()
    .member("name", Scalar::new())
    .member("year", Scalar::new())
    .member("team", Sequence::new(Scalar::new()))
}

[stappersg]

Seen the hint, thanks.

Expect to see an updated pull request.
It will be for a non master branch like serde or staging. Yes, it would be nice to have a staging branch ;-)

[stappersg]

Closing this PR because superseeded by PR #24.
It does have error message about non iterable item list ...