Adds a toggle-able admin alert when any admin joins the server

src/main/java/net/knarcraft/stargate/config/StargateConfig.java

@@ -319,6 +319,15 @@ public final class StargateConfig {
         }
     }
 
+    /**
+     * Gets whether admins should be alerted about new plugin updates
+     *
+     * @return <p>Whether admins should be alerted about new updates</p>
+     */
+    public boolean alertAdminsAboutUpdates() {
+        return (boolean) configOptions.get(ConfigOption.ADMIN_UPDATE_ALERT);
+    }
+
     /**
      * Loads all config values
      */