Modified default controller from index.php to app.php

modules/welcome/controllers/app.php

@@ -0,0 +1,31 @@
+<?php
+
+function controller($switch='') {
+
+    switch($switch) {
+
+        default:
+
+            return 'Welcome to the real world!';
+            
+        break;
+        
+        case 'good':
+        
+            return 'All things are good!';
+        
+        break;
+        
+        case 'json':
+        
+            $data=['data' => 'Cool'];
+        
+            header('Content-Type: application/json; charset=utf-8');
+            
+            return json_encode($data);
+        
+        break;
+    
+    }
+
+}