Update credits

README.md

@@ -7,7 +7,7 @@ Help is included as help entry for Item Documentation [`doc_items`].
 
 ## Converting machines from `vendor` mod (experimental)
 This mod is able to automatically transform the vending and depositing
-machines from Bad\_Command_'s Vending machines [`vendor`] mod on loading
+machines from Bad\_Command\_'s Vending machines [`vendor`] mod on loading
 and turn them into the new machines from `easyvend`. This is useful if
 you want to switch a world from `vendor` to `easyvend`.
 
@@ -33,7 +33,19 @@ keep as many machines in operation as possible. Machines with very high values
 be reconfigured by their owners. Most machines which worked before will likely
 stay in operation afterwards.
 
-## Licenses
-- Code: LGPL 2.1. Forked from mod “Vending Machines” [vendor] by Bad_Command_.
-- Sounds: CC-BY 3.0/CC-BY-SA 3.0/GPL 3.0/GPL 2.0
-- Textures: MIT License 
+## Credits and licenses
+- Code
+    - License: [LGPL 2.1](https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html)
+    - Source: Forked from mod “Vending Machines” [vendor] by Bad\_Command\_.
+    - Authors: Bad\_Command\_ and Wuzzy
+- Textures
+    - License: MIT License
+    - Author: Wuzzy
+- Sounds
+    - Any of the following licenses apply:
+        - [CC-BY 3.0](https://creativecommons.org/licenses/by/3.0/)
+        - [CC-BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/)
+        - [GPL 3.0](https://www.gnu.org/licenses/gpl-3.0.html)
+        - [GPL 2.0](https://www.gnu.org/licenses/old-licenses/gpl-2.0)
+    - Source: [OpenGameArt](http://opengameart.org/content/inventory-sound-effects)
+    - Authors: [OpenGameArt](http://opengameart.org/) user artisticdude, edited by Bad\_Command\_

sounds/sound_license.txt

@@ -1,5 +0,0 @@
-Sounds effects derived from:
-http://opengameart.org/content/inventory-sound-effects
-
-Applicable licenses:
-CC-BY 3.0 CC-BY-SA 3.0 GPL 3.0 GPL 2.0