add setup steps to readme

closes #98

Author: Boy132

rust-umod/README.md

@@ -2,6 +2,11 @@
 
 Easily download and install Rust plugins directly from uMod (formerly Oxide) within the server panel.
 
+## Setup
+
+Add `umod_plugins` to the _features_ of your egg to enable the mod page.  
+Also make sure you use `oxide` or `umod` as modding framework. (`FRAMEWORK` startup variable)
+
 ## Features
 
 - Browse and search uMod's Rust plugin library