xos-sample-gui-extension cleanup and update with new documentation

Change-Id: I6b70f5127ea631cfdd1f8a372a51c20f547e9c44
diff --git a/conf/app/app.config.production.js b/conf/app/app.config.production.js
index 43b5750..de6179f 100755
--- a/conf/app/app.config.production.js
+++ b/conf/app/app.config.production.js
@@ -18,6 +18,6 @@
 
 angular.module('app')
   .constant('AppConfig', {
-    apiEndpoint: '/spa/api',
+    apiEndpoint: '/xos/api',
     websocketClient: '/'
   });