Add usage examples of arrays

[vixalien]

Nice project! They nicely demonstrate to use all of the various types, except C arrays.

[aapoalas]

Thank you.

There's an open issue #3 about adding proper C API binding examples. All in all the whole 'nomicon is badly missing good examples. I'll... maybe get around to it one day? No promises about quick work though, my apologies.

If you want to, I would happily accept PRs adding examples.