An updated version of https://gist.github.com/jczaplew/6453048 or /jczaplew/6453048 using the logic from this example http://mbostock.github.io/d3/talk/20111018/azimuthal.html
Modified http://d3js.org/d3.v3.min.js to a secure url
Modified http://d3js.org/topojson.v1.min.js to a secure url
https://d3js.org/d3.v3.min.js
https://d3js.org/topojson.v1.min.js