remove shebang from module

The module file should not be executable.
comment smooth -> makeOddNumber()
comment smooth.py:makeOddNumber()
add info on module

add __info__() function
add main part for info
comment smooth.py -> smooth()
add help(smooth)
add return info in smooth.py -> gaussFunction
add help to smooth2D() and adjust raises

add help description to smooth2D() function
add help output to main
adjusted raise Exeptions