Issue #287: Installation Issue (conservancy/kallithea)

[BGW]

New issue 287: Installation Issue
https://bitbucket.org/conservancy/kallithea/issues/287/installation-issue

BGW:

Trying to install Kallithea on Lubuntu 16.04.2, 32 bit. Machine with 1 GB RAM, Pentium 4 processor.  Get the following error after command


```
#!

php install -e .
```

Error: 


```
#!

  Found existing installation: setuptools 36.2.0
    Uninstalling setuptools-36.2.0:
      Successfully uninstalled setuptools-36.2.0
  Rolling back uninstall of setuptools
Exception:
Traceback (most recent call last):
  File "/home/scm/kallithea-venv/local/lib/python2.7/site-packages/pip/basecommand.py", line 215, in main
    status = self.run(options, args)
  File "/home/scm/kallithea-venv/local/lib/python2.7/site-packages/pip/commands/install.py", line 342, in run
    prefix=options.prefix_path,
  File "/home/scm/kallithea-venv/local/lib/python2.7/site-packages/pip/req/req_set.py", line 784, in install
    **kwargs
  File "/home/scm/kallithea-venv/local/lib/python2.7/site-packages/pip/req/req_install.py", line 851, in install
    self.move_wheel_files(self.source_dir, root=root, prefix=prefix)
  File "/home/scm/kallithea-venv/local/lib/python2.7/site-packages/pip/req/req_install.py", line 1064, in move_wheel_files
    isolated=self.isolated,
  File "/home/scm/kallithea-venv/local/lib/python2.7/site-packages/pip/wheel.py", line 247, in move_wheel_files
    prefix=prefix,
  File "/home/scm/kallithea-venv/local/lib/python2.7/site-packages/pip/locations.py", line 140, in distutils_scheme
    d = Distribution(dist_args)
  File "/home/scm/kallithea-venv/local/lib/python2.7/site-packages/setuptools/dist.py", line 365, in __init__
    self._finalize_requires()
  File "/home/scm/kallithea-venv/local/lib/python2.7/site-packages/setuptools/dist.py", line 372, in _finalize_requires
    if not self.install_requires:
AttributeError: Distribution instance has no attribute 'install_requires'
```
I know nothing about Python so none of this make sense to me. Please advise on how to fix, or update documentation so that Kallithea is easy to install for us ignorant of your development environment.