Add httpNodeCors setting

Adds a dependency on the 'cors' npm module

settings.js

@@ -92,6 +92,15 @@ module.exports = {
     //    cert: fs.readFileSync('certificate.pem')
     //},
 
+    // The following property can be used to configure cross-origin resource sharing
+    // in the HTTP nodes.
+    // See https://github.com/troygoode/node-cors#configuration-options for
+    // details on its contents. The following is a basic permissive set of options:
+    //httpNodeCors: {
+    //    origin: "*",
+    //    methods: "GET,PUT,POST,DELETE"
+    //},
+    
     // Anything in this hash is globally available to all functions.
     // It is accessed as context.global.
     // eg: