Changed README

Author: thebatclaudio

README.md

@@ -6,7 +6,7 @@ Get all menus:
 
     GET /menus/v1/menus
 
-Get menus data from slug:
+Get menus data from slug or ID:
 
     GET /menus/v1/menus/{slug}
 
@@ -16,4 +16,7 @@ Get all locations:
 
 Get menus data from location's slug
 
-    GET /menus/v1/locations/{slug}
+    GET /menus/v1/locations/{slug}
+
+## Compatibility
+Compatible with ACF menu's custom attributes and menu item's custom attributes.