Documentation in README is wrong

[moeffju]

Using v2.1.1 installed via pip in Python 3.7.3, many commands mentioned in the README do not exist or do not work, and some commands don't even work as documented in the internal help function. Examples:

$ putio transfers cancel_seeding
Usage: putio transfers [OPTIONS] COMMAND [ARGS]...
Try 'putio transfers --help' for help.

Error: No such command 'cancel_seeding'.

$ putio transfers --help
Usage: putio transfers [OPTIONS] COMMAND [ARGS]...

Options:
  --help  Show this message and exit.

Commands:
  cancel-by-status  Cancel transfers by status
  cancel-completed  Cancel completed transfers
  cancel-seeding    Cancel seeding transfers
  clean             Clean finished transfers
  groom             Cancel seeding and completed transfers, and clean...
  list              List transfers

$ putio transfers cancel-seeding
Usage: putio [OPTIONS]
Try 'putio --help' for help.

Error: Got unexpected extra arguments (S E E D I N G)

I'm not sure if I'm doing something wrong or if this is some regression or what, but updated documentation would be great :)