added clear output filter

4-GPU/HandsOn/.master/CMakeLists.txt

@@ -10,6 +10,7 @@ add_subdirectory(./resources)
 
 add_custom_command(OUTPUT HandsOnGPUProgramming.ipynb 
         COMMAND notebook-splitter --remove "solution" ${CMAKE_CURRENT_SOURCE_DIR}/HandsOnGPUProgramming_master.ipynb --output HandsOnGPUProgramming.ipynb 
+        COMMAND jupyter nbconvert --ClearOutputPreprocessor.enabled=True --inplace HandsOnGPUProgramming.ipynb
         DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/HandsOnGPUProgramming_master.ipynb) 
 
 add_custom_command(OUTPUT HandsOnGPUProgramming_Solution.ipynb