Minor update to setup.py so that the classifiers are correct, and are accepted by PyPI.
Minor update to setup.py so that the classifiers are correct, and are accepted by PyPI.

ATenderholt/cclib,ben-albrecht/cclib,jchodera/cclib,Schamnad/cclib,langner/cclib,ghutchis/cclib,gaursagar/cclib,Clyde-fare/cclib,andersx/cclib,berquist/cclib,ATenderholt/cclib,ben-albrecht/cclib,Schamnad/cclib,cclib/cclib,jchodera/cclib,cclib/cclib,langner/cclib,gaursagar/cclib,ghutchis/cclib,langner/cclib,cclib/cclib,berquist/cclib,andersx/cclib,berquist/cclib,Clyde-fare/cclib