adding new setup.py

[esc]

This makes afp-cli pip+git installable:

e.g. for this branch/pull-request, you can try:

pip install git+git://github.com/esc/afp-cli.git@feature/setup.py

[esc]

The pybuilder generated file seems buggy:

vhaenel@isdeblnnl086 ~/gw/afp-cli [afp-cli:feature/setup.py:★★] % pip install git+git://github.com/esc/afp-cli.git@feature/setup.py
Downloading/unpacking git+git://github.com/esc/afp-cli.git@feature/setup.py
  Cloning git://github.com/esc/afp-cli.git (to feature/setup.py) to /tmp/pip-hETXYo-build
  Running setup.py (path:/tmp/pip-hETXYo-build/setup.py) egg_info for package from git+git://github.com/esc/afp-cli.git@feature/setup.py
    Traceback (most recent call last):
      File "<string>", line 17, in <module>
      File "/tmp/pip-hETXYo-build/setup.py", line 43, in <module>
        except FileNotFoundError as e:
    NameError: name 'FileNotFoundError' is not defined
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):

  File "<string>", line 17, in <module>

  File "/tmp/pip-hETXYo-build/setup.py", line 43, in <module>

    except FileNotFoundError as e:

NameError: name 'FileNotFoundError' is not defined

----------------------------------------
Cleaning up...
Command python setup.py egg_info failed with error code 1 in /tmp/pip-hETXYo-build
Storing debug log for failure in /data/home/vhaenel/.pip/pip.log

[esc]

I can confirm that the fix submitted to pybuilder works, so I'll merge this here and now.