Add Glass and Obsidian Glass door

mods/doors/README.txt

@@ -1,23 +1,46 @@
 Minetest 0.4 mod: doors
 =======================
+version: 1.3
 
 License of source code:
 -----------------------
 Copyright (C) 2012 PilzAdam
+modified by BlockMen (added sounds, glassdoors[glass, obsidian glass], trapdoor)
 
 This program is free software. It comes without any warranty, to
 the extent permitted by applicable law. You can redistribute it
 and/or modify it under the terms of the Do What The Fuck You Want
 To Public License, Version 2, as published by Sam Hocevar. See
 http://sam.zoy.org/wtfpl/COPYING for more details.
 
-License of media (textures and sounds)
+License of textures
 --------------------------------------
-Textures created by Fernando Zapata (CC BY-SA 3.0):
+following Textures created by Fernando Zapata (CC BY-SA 3.0):
   door_wood.png
   door_wood_a.png
   door_wood_a_r.png
   door_wood_b.png
   door_wood_b_r.png
 
+following Textures created by BlockMen (WTFPL):
+  door_trapdoor.png
+  door_obsidian_glass_side.png
+
+following textures created by celeron55 (CC BY-SA 3.0):
+  door_trapdoor_side.png
+  door_glass_a.png
+  door_glass_b.png
+
+following Textures created by PenguinDad (CC BY-SA 4.0):
+  door_glass.png
+  door_obsidian_glass.png
+
 All other textures (created by PilzAdam): WTFPL
+
+
+License of sounds
+--------------------------------------
+Opening-Sound created by CGEffex (CC BY 3.0), modified by BlockMen
+  door_open.ogg
+Closing-Sound created by bennstir (CC BY 3.0)
+  door_close.ogg