add apiUrlPrefix

README.md

@@ -243,3 +243,10 @@ The permissions:
           com.example.hello     # refers to /srv/walnut/packages/pages/com.example.hello
           '''
 ```
+
+API
+---
+
+```
+req.apiUrlPrefix => https://api.example.com/api/tld.domain.pkg
+```

lib/apis.js

@@ -517,6 +517,12 @@ module.exports.create = function (xconfx, apiFactories, apiDeps) {
       var hasBeenHandled = false;
 
       // Existing (Deprecated)
+      Object.defineProperty(req, 'apiUrlPrefix', {
+        enumerable: true
+      , configurable: false
+      , writable: false
+      , value: 'https://' + clientApiUri + '/' + pkgId
+      });
       Object.defineProperty(req, 'experienceId', {
         enumerable: true
       , configurable: false