Updated README.

README.md

@@ -2,4 +2,12 @@ To get up and running:
 
     $ npm install -g bower
     $ bower install
-    $ open index.html
\ No newline at end of file
+    $ open index.html
+
+If your REST server expects anything on the URL path (such as `/api/study/list` instead of `/study/list`), add a `config.js` on the project root:
+
+    $ var config = {
+    $   'baseUrl': '/my-prefix/'
+    $ };
+
+You can set `baseUrl`  to a URL if you wish.