updated readme file

README.md

@@ -1,10 +1,34 @@
 
-This mod is not finished yet.
+This mod is not entirely finished, but may already be very useful.
 
-Create a file named
+Type "/giveme handle_schematics:build" to get a build chest.
+Place the chest in the world and click through the menue.
+
+The examples/ folder contains some very small saved buildings which
+allow you to just spawn them and play with the options even if you
+don't have one of your own houses at hand. The example files do
+not require much disk space. They are very small.
+
+NOTE: In order to be able to spawn a schematic, you need to copy
+the schematic file to your <WORLDNAME>/schems/ folder. With security
+enabled in your minetest.conf (in general a very good idea!), mods
+cannot even read files from anything that is not stored inside your
+world folder or one of its subfolders.
+
+Supported schematic types:
+	*.mts		Minetest schematic
+	*.we		WorldEdit savefile format
+	*.schematic	Used in the Minecraft world
+
+Optional: You can also create a file named
 	list_of_schematics.txt
 in the folder containing this mod (not the world!).
 Each line of the file ought to contain the name and full path to a schematic.
 Those will be offered to you in the build chest's menu under "main".
+The advantage of this method is low as with security enabled, files can only
+be read from the <WORLDNAME>/ folder. You can ignore this option for now.
+
+Author:  Sokomine
+License: GPLv3.0
+Last update: 27.12.2016
 
-Type "/giveme handle_schematics:build" to get a build chest.