Migration to 0.9 streams API.
Incorporated cleanup suggestions from Patrik and Konrad.
One that I missed in the previous cleanup.
Switched to simpler foreach(println) form for default in BasicTransformation.
Updated the tutorial documentation for the 0.9 API.
Fixed mistakes in the tutorial after peer review.
Cleaned up documentation URLs.
Merge pull request #9 from dickwall/master

Migration to 0.9 streams API.