add the untested code for the d3 heatmap, various TODOs noted
decide to transition to rspec (based on books, need internet to implement)
add ajax to the interval delete button
add timer display, still requires:
1. time-formatting,
2. ref to setInterval ID so it can properly stop intervalling
rails' test_helper working with devise. I just set g.test_framework :rspec, so I'm snapshotting now before I try and generate the tests