Don't pollute the global Object namespace

- Remove the monkeypatch on Object
- Renames `uses` to far less generic `spec_uses` to avoid conflicts
with any  `uses` method in code that uses SpecRequirer
- Also renames `uses_models` etc. to `spec_uses_models` for consistency
Remove pry
Rename uses(?_*) to utilizes

- US English spelling to be global, despite my better judgement.
Merge pull request #1 from HouseTrip/scope_methods_on_spec_config

Don't pollute the global Object namespace