Export CartoDB GeoJSON to TopoJSON.

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <title></title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta name="description" content="">
    <meta name="author" content="">

<link href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.3.1/css/bootstrap-combined.min.css" rel="stylesheet">

/* Custom container */
        .container-narrow {
        margin: 0 auto;
        max-width: 960px;
        }
        .container-narrow > hr {
        margin: 30px 0;
        }

.country {
        fill: #ccc;
        stroke: #fff;
        stroke-width: .5px;
        stroke-linejoin: round;
        }

.country-boundary {
        fill: none;
        stroke: #fff;
        stroke-width: .5px;
        stroke-linejoin: round;
        }
    </style>

</head>

<body>

</div>
      </div>

</div>

var width = 960,
    height = 1160;

var svg = d3.select("#map").append("svg")
    .attr("width", width)
    .attr("height", height);

// Based the data transformation over the CartoDB
// $ topojson -o world-data-demo.json world-data.geojson --id-property iso3 -p name,pop2005

d3.json("world-data-demo.json", function(error, world) {
  svg.append("path")
      .datum(topojson.object(world, world.objects.countries))
      .attr("d", d3.geo.path().projection(d3.geo.mercator()))
      .attr("class", "country");
});

</script>

</body>
</html>

Modified http://html5shim.googlecode.com/svn/trunk/html5.js to a secure url

Modified http://d3js.org/d3.v3.min.js to a secure url

Modified http://d3js.org/d3.geo.projection.v0.min.js to a secure url

Modified http://d3js.org/topojson.v0.min.js to a secure url

https://html5shim.googlecode.com/svn/trunk/html5.js

https://d3js.org/d3.v3.min.js

https://d3js.org/d3.geo.projection.v0.min.js

https://d3js.org/topojson.v0.min.js