Python 3 Fix

[Dauth]

script works in python 3 with just a small fix.

replace "if (isinstance(value, basestring)" in the init file with "if (isinstance(value, (str,bytes))"

[originell]

don't you want to submit a pull request ;-)? So you are properly marked into this project's history?

[oskrocha]

I also had to do a small fix in the init file to make it work with python 3. Line 64:
for key, value in dic.iteritems():
has to be changed with:
for key, value in dic.items():

[aolieman]

Maintenance in this repo seems to have halted, so I did a new release based on my fork: https://pypi.python.org/pypi/pyspotlight/0.7.1

Issues and pull requests are welcome at https://github.com/aolieman/pyspotlight!