more comments in config file

lib/config_def.yaml

@@ -13,6 +13,12 @@ uplinks:
     url: https://registry.npmjs.org/
 
 packages:
+  # uncomment this for packages with "local-" prefix to be available 
+  # for admin only, it's a recommended way of handling private packages
+  #'local-*':
+  #  allow_access: admin
+  #  allow_publish: admin
+
   '*':
     # allow all users to read packages ('all' is a keyword)
     # this includes non-authenticated (anonymous) users
@@ -26,3 +32,11 @@ packages:
 
     # when package is published locally, also push it to remote registry
     #proxy_publish: none
+
+#####################################################################
+# Advanced settings
+#####################################################################
+
+# if you use nginx with custom path, use this to override links
+#url_prefix: https://dev.company.local/sinopia/
+