simplify router entry

@@ -30,7 +30,7 @@ app.use(cookieParser());
 app.use(express.static(path.join(__dirname, 'public')));
 app.use(express.static(path.join(__dirname, 'public')));
 
 
 // router
 // router
-app.use('/', require('./router'));
+app.use(require('./router'));
 
 
 // listener
 // listener
 app.listen(3000, function() {
 app.listen(3000, function() {