Add an option to enable Ack on entry
Merge branch 'refs/heads/feature/branchF' into feature/ackOnEntry

Conflicts:
	summingbird-storm/src/main/scala/com/twitter/summingbird/storm/Constants.scala
	summingbird-storm/src/main/scala/com/twitter/summingbird/storm/StormPlatform.scala
Merge branch 'refs/heads/feature/branchF' into feature/ackOnEntry

Conflicts:
	summingbird-storm/src/main/scala/com/twitter/summingbird/storm/Constants.scala
Rename the default const to be more inline with others
Merge branch 'develop' of github.com:twitter/summingbird into feature/ackOnEntry
Merge branch 'develop' of github.com:twitter/summingbird into feature/ackOnEntry
Lazy has no point there
Merge pull request #398 from twitter/feature/ackOnEntry

Feature/ack on entry