Filtering out the :api_version from configuration given to the client class.
Added basic integratino tests for Amazon SNS.
Added basic integration tests for Amazon SES.
Reworked RegionalEndpoint plugin and endpoint logic.

Regions and endpoints are now tracked in the API metadata with
simple fallbacks for when new regions are launched but not
described.
Rebuilt APIs with regions and endpoints added to metadata.
Added a pair of SimpleDB integration tests.
Moved the API source files to apis/source/
Moved endpoints.json to apis/configuration/endpoints.json