rename computer mod to "computers"

and fix all the image and model filenames that didn't conform before.
aliases are provided for the old nodes

computers/README.txt

@@ -0,0 +1,51 @@
+
+Decorative Computers Mod for Minetest
+by Diego Martínez <kaeza@users.sf.net>
+
+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
+
+How to use the mod:
+For now just use creative mode or the `/give' or `/giveme' chat commands
+ to get the items.
+
+These are the items currently defined by this mod:
+
+"computers:shefriendSOO",
+"computers:vanio",
+"computers:vanio_off",
+"computers:slaystation",
+"computers:slaystation2",
+"computers:specter",
+"computers:wee",
+"computers:piepad",
+"computers:admiral64",
+"computers:admiral128",
+"computers:hueg_box",
+"computers:monitor",
+"computers:monitor_on",
+"computers:router",
+"computers:tower",
+"computers:server",
+"computers:server_on",
+"computers:printer",
+"computers:3dprinter_bedflinger",
+"computers:3dprinter_corexy",
+"computers:tetris_arcade",
+
+There's also a `computers:computer' alias to `computers:babytower'.
+
+Thanks to all the people in the forums and the #minetest IRC channel for
+ their support and suggestions; in no particular order:
+  OldCoder, Josh, tonyka, VanessaE, davidpace, Jordach, and all the other
+  sirs/madammes that I forgot to mention (sorry, please remind me if it
+  was you ;) ). 
+
+See also:
+http://minetest.net/