You can download the latest distribution from PyPI here: http://pypi.python.org/pypi/scikit-hep
You can install scikit-hep for yourself from the terminal by running:
pip install --user scikit-hep
If you want to install it for all users on your machine, do:
pip install scikit-hepOn Linux, do sudo pip install scikit-hep.
This package was discovered in PyPI.