ENH: Replaced use of slice256.png with ES0015_Large.mha
ENH: Replaced use of slice256.png with ES0015_Large.mha

sumedhasingla/TubeTK,cdeepakroy/TubeTK,KitwareMedical/ITKTubeTK,sumedhasingla/TubeTK,sumedhasingla/TubeTK,KitwareMedical/ITKTubeTK,thewtex/TubeTK,LucasGandel/TubeTK,cdeepakroy/TubeTK,sumedhasingla/TubeTK,LucasGandel/TubeTK,matthieuheitz/TubeTK,cdeepakroy/TubeTK,matthieuheitz/TubeTK,LucasGandel/TubeTK,matthieuheitz/TubeTK,aylward/ITKTubeTK,matthieuheitz/TubeTK,thewtex/TubeTK,thewtex/TubeTK,KitwareMedical/TubeTK,KitwareMedical/ITKTubeTK,KitwareMedical/TubeTK,LucasGandel/TubeTK,KitwareMedical/TubeTK,thewtex/TubeTK,aylward/ITKTubeTK,KitwareMedical/ITKTubeTK,KitwareMedical/TubeTK,aylward/ITKTubeTK,aylward/ITKTubeTK,cdeepakroy/TubeTK