Currently the README file states:
# Tag users
tag = intercom.tags.tag_users(name='blue', users=[{'email': 'test1@example.com'}])

But this results in
AttributeError: 'Tag' object has no attribute 'tag_users'

Perhaps it should say:
tag = intercom.tags.tag(name='blue', users=[{'email': 'test1@example.com'}])
since this results in success.