README.md in mautic-0.1.7 vs README.md in mautic-0.1.8

@@ -84,9 +84,10 @@
 add to `config/initializers/mautic.rb`:
 ```ruby
 Mautic.configure do |config|
   # This is for oauth handshake token url. I need to know where your app listen
   config.base_url = "https://my-rails-app.com"
+  # OR it can be Proc 
   # *optional* This is your default mautic URL - used in form helper 
   config.mautic_url = "https://mautic.my.app"
 end
 ```