Added userdata to song model.
Merge pull request #10 from gnauhnoj/JonDev

Added userdata to song model.
Updates styles, adds radio buttons
Merge pull request #11 from taylorharwin/d3Add

Updates styles, adds radio buttons
Remove note
Move d3
Change some styles
Remove references to note.js
Implement click node behavior
Merge pull request #12 from daviskim/feedback

Implement click node behavior