index: add not found

lib/index.js

@@ -190,6 +190,15 @@ InsightAPI.prototype.setupRoutes = function(app) {
   });
   app.get('/currency', currency.index.bind(currency));
 
+  // Not Found
+  app.use(function(req, res) {
+    res.status(404).jsonp({
+      status: 404,
+      url: req.originalUrl,
+      error: 'Not found'
+    });
+  });
+
 };
 
 InsightAPI.prototype.getPublishEvents = function() {