local resources
zoomable and bouncy
added missing files from animation attempt
packaged
uses projection for animation rather than scales
zooms in and out, bringing bike stands with it
aaah, d3.behaviour.zoom <3
passing data around to circles
added tooltip styling. from http://www.d3noob.org/2013/01/adding-tooltips-to-d3js-graph.html
fade-out fade-in circles
don't run the callback before declaring it, sissy