Updates to README. Include README, LICENSE in npm.
Use a post-update version of `aws-sdk`.
Moved connection object to the Model prototypes for more consistent behavior.
Updated Model.findOne to use the new API.
Fixed bug where toJSON wasn't performing the transformation.
Updated model.save to use new API.
Updated README to reflect changes in the API.
Fixed toJSON test.
More updates to the README/proposed API.