Modified directory structure on README

Author: Angel Garcia

README.md

@@ -89,25 +89,12 @@ console
     migrations/          contains database migrations
     models/              contains console-specific model classes
     runtime/             contains files generated during runtime
-backend
-    assets/              contains application assets such as JavaScript and CSS
-    config/              contains backend configurations
-    controllers/         contains Web controller classes
-    models/              contains backend-specific model classes
+api
+    config/              contains api configurations
+    modules/             contains Web controller classes
     runtime/             contains files generated during runtime
-    tests/               contains tests for backend application    
-    views/               contains view files for the Web application
+    tests/               contains tests for api application    
     web/                 contains the entry script and Web resources
-frontend
-    assets/              contains application assets such as JavaScript and CSS
-    config/              contains frontend configurations
-    controllers/         contains Web controller classes
-    models/              contains frontend-specific model classes
-    runtime/             contains files generated during runtime
-    tests/               contains tests for frontend application
-    views/               contains view files for the Web application
-    web/                 contains the entry script and Web resources
-    widgets/             contains frontend widgets
 vendor/                  contains dependent 3rd-party packages
 environments/            contains environment-based overrides
 ```