Added special thanks to @panzi in the readme.

README.md

@@ -51,4 +51,6 @@ Authored and maintained by Michael Davies.
 > GitHub [@a1studmuffin](https://github.com/a1studmuffin)
 > Twitter [@butterparty](https://twitter.com/butterparty)
 
+Special thanks to [@panzi](https://github.com/panzi) for bugfixes, a proper GUI and build script.
+
 [MIT License]: http://mit-license.org/