Update README to current changes

README.txt

@@ -16,6 +16,20 @@ http://wiki.minetest.com/wiki/Installing_Mods
 How to use the mod:
 Just install it an everything works.
 
+For developers:
+This mod changes the minetest.get_node_drops() function to always
+return {}. Use minetest.get_drops() to get the right drop.
+Example:
+Before:
+local drop = minetest.get_node_drops("default:dirt", "default:pick_mese")
+After:
+local drop
+if minetest.get_modpath("item_drop") == nil then
+	drop = minetest.get_node_drops("default:dirt", "default:pick_mese")
+else
+	drop = minetest.get_drops("default:dirt", "default:pick_mese")
+end
+
 License:
 Sourcecode: WTFPL (see below)
 Sound: WTFPL (see below)