Add an example with reconcile, hydrate, and hydrate path

[issackelly]

My first goal was to work on my retrieval and upsert logic. I thought "hydrate_path" and "reconcile_prop" would do the trick but I have ran into snags with each.

Here were some of the surprising things about this:

1. I can't yet get "hydrate_path" to work.
2. Props seem to want integers to be Indexes and strings to be keys with the current set of Impls . I don't think I mind that behavior too much but I want to know ahead of time if I'm holding the tool wrong.