Modifies the function calls so that they are compatible with wdnet.py
Fixes names, so that they are consistent with wordnetReader.h
Changes the return type of getSynonymsOf back to vector<string>
Implements getHyponymsOf, removes Py_DECREFs after borrowed references.
Updates the main loop so that it tests getSynonymsOf() and getHyponymsOf(). Adds a way to exit the main while loop