Modifications for 0.4.4

In case it is of any help: I have made the (very few) modifications that are necessary for SDK version 0.4.4.

I have also made the required modifications to build the project with SBT in addition to Maven. This allows to launch the demos cross platform just via `sbt run`.
Similarly, I don't check in eclipse project files.  In particular I don't use Scala, so this project file would break my own non-checked in eclipse project.