Began implementing the interface.
Got initial KVO working with the table view and wired up most of the buttons.
Got the billing rates working through 2 methods. Fixed the displayString method on meeting.m
Made the elapsedTimeString method even better.
Got saving and opening working.
Removed trailing ; in method implementations in the .m files.
Added default person name and rate for new people.
Added button for a pre-defined new meeting with a random template.
Completed HW3 requirements.
Finished HW3

Implemented KVO to update the total billing rate, moved all of the currency formatters to 1 single number formatter on the .xib
Started implementing undo via KVO, but running into issues.
Got undo/redo working (preliminary)
Got the preferences window to show up.
Removed unneeded KVO.
Inserted icons.
New Person objects get created honoring the defaults set in preferences.
Completed HW4
Removed old files.
Merge branch 'refs/heads/meetingTracker-hw4'

Conflicts:
	Meeting Tracker/Meeting Tracker/Meeting.m
	Meeting Tracker/Meeting Tracker/MeetingDocument.m
Old files from the merge of hw4.