Changed command line parsing to use argparse library.  Added option to specify the path to a zip or folder by '-p' or '--path'.
Merge pull request #6 from DragonFire168/master

Student objects and enhanced user inerface
Added --config argument.  Config is set to path if nothing is specified.
Removed debugging statements.
Merge remote-tracking branch 'origin/argparse' into argparse

Conflicts:
	grade.py
Added paths dict
Resolved merge conflicts
Removed unused import statements
Merge remote-tracking branch 'upstream/master'

Conflicts:
	grade.py
Merged upstream