Updating dataset POM to use 0.7.0-SNAPSHOT.
Updating dataset examples Drop => Delete.
Updating dataset reader examples to use for-each.
Updating README for 0.7.0 API changes.
Updating logging POM for 0.7.0-SNAPSHOT.
Updating ReadDataset for 0.7.0 API.
Updating logging-webapp pom for 0.7.0.
Updating demo POMs for 0.7.0
Fixing comments (Drop => Delete)
Merge branch 'cdk-0.7.0-updates'
Rename DropDataset to DeleteDataset.