Package structure

GetFX/
|--- GetFX/ (generic documentation)
        |--- __init__.py
        |--- getfx.py
        |--- getfx_test.py
|--- GetFXNBP/ (specific implementation)
	|--- __init__.py
	|--- getfxnbp.py
	|--- getfxnbp_test.py
|--- getfxnbp_cmd.py (specific command line implementation)
|--- README.md

References:

• https://github.com/kniklas/learning-python/tree/master/modules_packages
• https://www.python.org/dev/peps/pep-0257/