`python setup.py dev` fails due to mock dependency on setuptools>=17.1

[brianthelion]

$ python -c "import setuptools; print setuptools.__version__"
2.2
$ python setup.py dev
....
Searching for mock
Reading https://pypi.python.org/simple/mock/
Best match: mock 1.3.0
Downloading https://pypi.python.org/packages/source/m/mock/mock-1.3.0.tar.gz#md5=73ee8a4afb3ff4da1b4afa287f39fdeb
Processing mock-1.3.0.tar.gz
Writing /tmp/easy_install-31PJ1j/mock-1.3.0/setup.cfg
Running mock-1.3.0/setup.py -q bdist_egg --dist-dir /tmp/easy_install-31PJ1j/mock-1.3.0/egg-dist-tmp-w60v2R
mock requires setuptools>=17.1. Aborting installation
error: Setup script exited with 1

This can be addressed in setup.py:

setup(name='foo',
    ...
    setup_requires=['setuptools>=17.1'],
    )

[cguardia]

Thanks. Added that to setup.py.