created a quiz interface.
Wrote test for Quiz.toString. Implementing.
finished writing implementation for quiz to string and per question to
string.
wrote a few more tests for Quiz class.(getters)
finished all tests for quiz.class
restructured the project packages for better organization.
added new methods to the question interface.
created a couple of generic map reorganizers under tools.
Wrote a generic that works with both int or String keys, for maps
deletion.