Infer collection decorators
Use class name in CollectionDecorator#to_s
Fix integration specs

Rails 3.2.10 seems not to like us killing the server process.
Merge pull request #408 from haines/infer_collection_decorator

Infer collection decorator
Documentation
Merge pull request #409 from haines/docs

Documentation
Infer collection decorators for decorated associations
Merge pull request #410 from haines/infer_collection_decorator

Infer collection decorators for decorated associations