clean up handout and solution

exercise3_handout.zip

exercise3_handout/Exercise03.ipynb

exercise3_handout/dielectron.root

exercise3_handout/electron.root

exercise3_handout/ex3.py

exercise3_handout/exercise_3.pdf

exercise3_handout/geant4_simulation/.DS_Store

...ant4_simulation/.ipynb_checkpoints/__init__-checkpoint.py

...eant4_simulation/.ipynb_checkpoints/actions-checkpoint.py

...ut/geant4_simulation/.ipynb_checkpoints/vis-checkpoint.py

exercise3_handout/geant4_simulation/__init__.py

...out/geant4_simulation/__pycache__/__init__.cpython-39.pyc

...dout/geant4_simulation/__pycache__/actions.cpython-39.pyc

...ut/geant4_simulation/__pycache__/materials.cpython-39.pyc

..._handout/geant4_simulation/__pycache__/vis.cpython-39.pyc

exercise3_handout/geant4_simulation/actions.py

...imulation/geometry/.ipynb_checkpoints/EMCal-checkpoint.py

...lation/geometry/.ipynb_checkpoints/__init__-checkpoint.py

...ation/geometry/.ipynb_checkpoints/compcalor-checkpoint.py

...on/geometry/.ipynb_checkpoints/samplingcalo-checkpoint.py