Fix shadowed models variable

route.js

@@ -11,12 +11,10 @@ var conversions = require('./conversions');
 	conversions that are not possible simply are not included.
 */
 
-// https://jsperf.com/object-keys-vs-for-in-with-closure/3
-var models = Object.keys(conversions);
-
 function buildGraph() {
 	var graph = {};
-
+	// https://jsperf.com/object-keys-vs-for-in-with-closure/3
+	var models = Object.keys(conversions);
 	for (var len = models.length, i = 0; i < len; i++) {
 		graph[models[i]] = {
 			// http://jsperf.com/1-vs-infinity