* Added decimal_to_binary_recursion.py
* Added decimal_to_binary_recursion.py
* Made changes to docstring
* Use divmod()
* binary_recursive(div) + str(mod)
* Be kind with user input if possible
* Update decimal_to_binary_recursion.py
* ValueError: invalid literal for int() with base 10: 'number'
Co-authored-by: Christian Clauss <cclauss@me.com>