support redirection for capes

lib/routes/capes.js

@@ -5,6 +5,7 @@ var cache = require("../cache");
 // GET cape request
 module.exports = function(req, callback) {
   var userId = (req.url.pathname.split("/")[2] || "").split(".")[0];
+  var def = req.url.query.default;
   var rid = req.id;
 
   if (!helpers.id_valid(userId)) {
@@ -31,6 +32,7 @@ module.exports = function(req, callback) {
         status: status,
         body: image,
         type: image ? "image/png" : undefined,
+        redirect: image ? undefined : def,
         hash: hash,
         err: err
       });