Update of Gradle wrapper to 1.9 so that it will work with IntelliJ
Extension of Scala Interpreter and ScalaVerticleFactory to take a script (String) and a name (String) to create new verticles. Underlying code was already ready for this so, changes are minimal. Simple test included.
Update module version to indicate modifications, update Vert.x version to latest 2.1 milestone (M6-snapshot)