Gaussian parser: modify __main__ to allow additional cmd-line args
Gaussian parser: modify __main__ to allow additional cmd-line args

* If one argument, assume filename and attempt to parse
* If extra arguments, assume these are cclib data attributes, and
  print these if they are in the resulting ccData object



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