Initial Commit of a Song object and SongItemCreator

The Song object has instance variables for each attribute of a song.
The SongItemCreator will call calll an Iterate_All_Songs object to get
the tables from the databases. #refs[6,7]
Merge branch 'master' of https://github.com/epurcell3/Million-Song-Data-Vis

Conflicts:
	.idea/workspace.xml