New test meta kernel downloader added, downloads a "minimal" set of kernels for tests. Added "Six" library dependancy for easier Python2/3 conflict fixing. I'm not sure how travis will take this. updated travis file to include six. Fixed one dumb error in setup.py
New test meta kernel downloader added, downloads a "minimal" set of kernels for tests. Added "Six" library dependancy for easier Python2/3 conflict fixing. I'm not sure how travis will take this. updated travis file to include six. Fixed one dumb error in setup.py

johnnycakes79/SpiceyPy,AndrewAnnex/SpiceyPy,michaelaye/SpiceyPy,drbitboy/SpiceyPy