docs: drop documentation for installing without virtualenv Installing globally as root require an unjustified trust in our build/install process ... and makes it very hard to uninstall or clean up. Installing as a user is slightly better but also more error-prone and not recommended. Those who really want to do it and know how to do it also don't need this description.

[tox]
minversion = 1.8
envlist = py27-pytest

[testenv]
setenv =
    PYTHONHASHSEED = 0
deps =
    -r{toxinidir}/dev_requirements.txt
    python-ldap
    python-pam
commands =
    pytest: py.test {posargs}