Update README

README.txt

@@ -1,8 +1,38 @@
 === BUILTIN_ITEM MOD for MINETEST-C55 ===
 by PilzAdam
 
-This mod adds new features to the builtin items:
-- They are pushed by flowing water
-- They are destroyed by lava
-- They are removed after 300 seconds or the time that is specified by
-   remove_items in minetest.conf
+Features:
+This mod adds some new features to the builtin items:
+- The items are pushed by flowing water
+- The items are destroyed by lava
+- The items are removed after 300 seconds or the time that is specified by
+   remove_items in minetest.conf (0 disables it)
+
+How to install:
+Unzip the archive an place it in minetest-base-directory/mods/minetest/
+if you have a windows client or a linux run-in-place client. If you have
+a linux system-wide instalation place it in ~/.minetest/mods/minetest/.
+If you want to install this mod only in one world create the folder
+worldmods/ in your worlddirectory.
+For further information or help see:
+http://wiki.minetest.com/wiki/Installing_Mods
+
+License:
+WTFPL (see below)
+
+See also:
+http://minetest.net/
+
+         DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                    Version 2, December 2004
+
+ Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+
+ Everyone is permitted to copy and distribute verbatim or modified
+ copies of this license document, and changing it is allowed as long
+ as the name is changed.
+
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. You just DO WHAT THE FUCK YOU WANT TO.