added createIntermediateRasters documentation

...IntermediateRasters/createIntermediateRasters-2layers.png

...IntermediateRasters/createIntermediateRasters-3layers.png

...IntermediateRasters/createIntermediateRasters-4layers.png

...teIntermediateRasters/createIntermediateRasters-input.png

...eIntermediateRasters/createIntermediateRasters-input1.png

...eIntermediateRasters/createIntermediateRasters-input2.png

...termediateRasters/createIntermediateRasters-output1-1.png

...IntermediateRasters/createIntermediateRasters-output1.png

...termediateRasters/createIntermediateRasters-output2-1.png

...termediateRasters/createIntermediateRasters-output2-2.png

...IntermediateRasters/createIntermediateRasters-output2.png

...ools/preprocessing/createIntermediateRasters/index.pandoc