updating README.md

declare several methods to be @staticmethod's

Cite Rosetta Code Ruby implementation

moved out interviews.md

added interviews.md -- questions to ask potential users

added stable roommates README

adding hypothesis-related comments

added empty col hypothesis check: if there is not an empty column at the end of phase one, there should be a stable match --> but this is currently NOT the case

added hypothesis checker: when there is a complete preference result (no unmatches), the result is stable

added comments to beginning of all files

added a few much-needed comments

added GroupStat class; completed test.py; defined statify() and print_nicely() methods in result.py

added test.py file; added print_nicely() method to Result class

rm pycache, added print_output=True as default to execute() method

added match.py; renamed matcher.py --> matchmaker.py