Installation error on Debian GNU/Linux 8.11 (jessie)

[ZaxonXP]

Tried to install as one of the requirements for sncli with following command:

pip install git+https://github.com/swalladge/simperium-python3.git#egg=Simperium3 --user
Downloading/unpacking Simperium3 from git+https://github.com/swalladge/simperium-python3.git
  Cloning https://github.com/swalladge/simperium-python3.git to /tmp/pip-build-v4xf4wpi/Simperium3
  Running setup.py (path:/tmp/pip-build-v4xf4wpi/Simperium3/setup.py) egg_info for package Simperium3
    /usr/lib/python3.4/distutils/dist.py:260: UserWarning: Unknown distribution option: 'python_requires'
      warnings.warn(msg)
    /usr/lib/python3.4/distutils/dist.py:260: UserWarning: Unknown distribution option: 'long_description_content_type'
      warnings.warn(msg)
    error in Simperium3 setup command: 'install_requires' must be a string or list of strings containing valid project/version requirement specifiers
    Complete output from command python setup.py egg_info:
    /usr/lib/python3.4/distutils/dist.py:260: UserWarning: Unknown distribution option: 'python_requires'

  warnings.warn(msg)

/usr/lib/python3.4/distutils/dist.py:260: UserWarning: Unknown distribution option: 'long_description_content_type'

  warnings.warn(msg)

error in Simperium3 setup command: 'install_requires' must be a string or list of strings containing valid project/version requirement specifiers

----------------------------------------
Cleaning up...
Command python setup.py egg_info failed with error code 1 in /tmp/pip-build-v4xf4wpi/Simperium3
Storing debug log for failure in /home/user/.pip/pip.log

What do I miss?

Regards,
Zaxon