Fix README a little and add piston sounds by suzenako, contributed by jordan4ibanez.

README.md

@@ -51,19 +51,21 @@ Who wrote it anyways?
 ---------------------
 These awesome people made Mesecons possible!
 
-| Contributor     | Contribution                       |
-| --------------- | ---------------------------------- |
-| Jat15           | Various tweaks.                    |
-| Jeija           | **Main developer! Everything.**    |
-| Jordach         | Noteblock sounds.                  |
-| khonkhortistan  | Coding, recipes, textures.         |
-| Kotolegokot     | Nodeboxes for items.               |
-| minerd247       | Textures.                          |
-| RealBadAngel    | Fixes, improvements.               |
-| sfan5           | Coding, recipes, textures.         |
-| Uberi/Temperest | Coding, textures, documentation.   |
-| VanessaE        | Coding, recipes, textures, design. |
-| Whiskers75      | Logic gates implementation.        |
+| Contributor     | Contribution                     |
+| --------------- | -------------------------------- |
+| Jat15           | Various tweaks.                  |
+| Jeija           | **Main developer! Everything.**  |
+| Jordach         | Noteblock sounds.                |
+| khonkhortistan  | Code, recipes, textures.         |
+| Kotolegokot     | Nodeboxes for items.             |
+| minerd247       | Textures.                        |
+| Nore/Novatux    | Code.                            |
+| RealBadAngel    | Fixes, improvements.             |
+| sfan5           | Code, recipes, textures.         |
+| suzenako        | Piston sounds.                   |
+| Uberi/Temperest | Code, textures, documentation.   |
+| VanessaE        | Code, recipes, textures, design. |
+| Whiskers75      | Logic gates implementation.      |
 
 There are also a whole bunch of other people helping with everything from code to testing and feedback. Mesecons would also not be possible without their help!
 

mesecons_pistons/init.lua

@@ -63,6 +63,11 @@ local piston_remove_pusher = function (pos, node)
 
 	if pushername == pistonspec.pusher then --make sure there actually is a pusher (for compatibility reasons mainly)
 		minetest.env:remove_node(pusherpos)
+		minetest.sound_play("piston_retract", {
+			pos = pos,
+			max_hear_distance = 20,
+			gain = 0.3,
+		})
 		nodeupdate(pusherpos)
 	end
 end
@@ -76,6 +81,11 @@ local piston_on = function (pos, node)
 	if success then
 		minetest.env:add_node(pos, {param2 = node.param2, name = pistonspec.onname})
 		minetest.env:add_node(np,  {param2 = node.param2, name = pistonspec.pusher})
+		minetest.sound_play("piston_extend", {
+			pos = pos,
+			max_hear_distance = 20,
+			gain = 0.3,
+		})
 		mesecon:mvps_process_stack (stack)
 		mesecon:mvps_move_objects  (np, dir, oldstack)
 	end