Added example for inference with the new util functions.
Added example for inference with the new util functions.

crowd-ai/post-processing-experiments,lucasb-eyer/pydensecrf,lucasb-eyer/pydensecrf,crowd-ai/post-processing-experiments,crowd-ai/post-processing-experiments,lucasb-eyer/pydensecrf,crowd-ai/post-processing-experiments