Add sample transformation output to the documentation

[holograph]

Per Eugene's comment, it might be worthwhile to add a sample output of the validation transformer for reference and debugging.

[holograph]

Actually, this makes little sense in the context of the documentation proper. Perhaps a document/post that describes the architecture and resulting code in detail. In the meantime, there doesn't appear to be all that much interest, so I'm pushing to a future 1.0 release.