Helpers?

Hi, First of all thanks for your work.
I noticed that a bounch of helpers are not present into c# version...
For example 
            scene.createDefaultCameraOrLight(true, true, true);
            scene.createDefaultEnvironment();
They havent' any corrispondance here. 
Could be they added somehow?

Moving sample to babylon version 5 will be also apreciated
REgards
Daniele
