Restructure ClassesRouter as a class.

src/index.js

@@ -18,6 +18,7 @@ import { FilesController } from './Controllers/FilesController';
 import ParsePushAdapter from './Adapters/Push/ParsePushAdapter';
 import { PushController } from './Controllers/PushController';
 
+import { ClassesRouter } from './Routers/ClassesRouter';
 
 // Mutate the Parse object to add the Cloud Code handlers
 addParseCloud();
@@ -125,25 +126,28 @@ function ParseServer(args) {
   api.use(middlewares.allowMethodOverride);
   api.use(middlewares.handleParseHeaders);
 
-  var router = new PromiseRouter();
-
-  router.merge(require('./classes'));
-  router.merge(require('./users'));
-  router.merge(require('./sessions'));
-  router.merge(require('./roles'));
-  router.merge(require('./analytics'));
-  router.merge(require('./installations'));
-  router.merge(require('./functions'));
-  router.merge(require('./schemas'));
+  let routers = [
+    new ClassesRouter().getExpressRouter(),
+    require('./users'),
+    require('./sessions'),
+    require('./roles'),
+    require('./analytics'),
+    require('./installations'),
+    require('./functions'),
+    require('./schemas'),
+    new PushController(pushAdapter).getExpressRouter()
+  ];
   if (process.env.PARSE_EXPERIMENTAL_CONFIG_ENABLED || process.env.TESTING) {
-    router.merge(require('./global_config'));
+    routers.push(require('./global_config'));
   }
-  let pushController = new PushController(pushAdapter);
-  router.merge(pushController.getExpressRouter());
 
-  batch.mountOnto(router);
+  let appRouter = new PromiseRouter();
+  routers.forEach((router) => {
+    appRouter.merge(router);
+  });
+  batch.mountOnto(appRouter);
 
-  router.mountOnto(api);
+  appRouter.mountOnto(api);
 
   api.use(middlewares.handleParseErrors);