Terrain rev. 3

i have an error with master version:

from core.RSCoreModules import TerrainMeshRenderer

ImportError: No module named core.RSCoreModules

if i replace from core.RSCoreModules by: from Core.RSCoreModules
i have this error:

[!!!] RenderPipeline The render pipeline no longer takes the ShowBase argument as constructor parameter. Please have a look at the 00-Loading the pipeline sample to see how to initialize the pipeline properly.