Using library from a Notebook
If you run the library from a notebook, you have the option to display a progress bar showing you the progress of the loading or normalization processes (NB: progress bar will not show up when loading one file at a time)
>>> sample_folder = '/Users/me/sample/'
>>> o_norm = Normalization()
>>> o_norm.load(folder=sample_folder, notebook=True)

or during normalization
>>> o_norm.normalization(notebook=True)
