Added DynamoDB Table Stream#633

Merged

eladb merged 3 commits intoaws:masterfrom

rhboyd:master

Aug 28, 2018

Commits on Aug 28, 2018

added the ability to specify a stream type, default behavior is no stream to maintain backwards compatibility
Richard Boyd
committed
incorporated @eladb's feedback
Richard Boyd
committed
clarified the default behavior
Richard Boyd
committed