Simplify folder structure

lib/api/middlewares/initialize-status-code.js

@@ -0,0 +1,11 @@
+'use strict';
+
+module.exports = function initializeStatusCode () {
+    return function initializeStatusCodeMiddleware (req, res, next) {
+        if (req.method !== 'OPTIONS') {
+            res.statusCode = 404;
+        }
+
+        next();
+    };
+};