require.config({
  paths: {
  	d3: "//cdnjs.cloudflare.com/ajax/libs/d3/3.5.3/d3.min",
  	geo: "//d3js.org/d3.geo.projection.v0.min",
  	topo: "//d3js.org/topojson.v1"
 },
 shim: {
 	geo: {
 		deps: ["d3"]
 	},
 	topo:{
 		deps: ["d3","geo"]        
 	}
 } 
});

require(["d3","geo","topo"],function(d3,geo,topojson){
	console.log(topojson);
})