Document the types yielded by the query and scan iterators

[Raynos]

The query() method returns { key, value } instead of { hash, range, value }

I don't understand what key is.

[heapwolf]

key is the [hash] or [hash, range] as an array of what ever data types they are. also, the user doesn't necessarily need to call them "hash" and "range", I might call them "city" and "state" in the create table method. value is everything except the key.

[Raynos]

Ok then this is just a documentaiton that key is a tuple of hash or hash,range :)