itol_uploader.add_file() errors

[LiZhihua1982]

[albertyw]

file_path should be a python path type instead of a string: https://docs.python.org/3/library/pathlib.html#concrete-paths

an easy way of creating path types for add_file is:

from pathlib import Path

itol_uploader.add_file(Path('tree_of_life.tree.txt'))

This is clarified in edde2d6