Added @kevinastone, for work on extra test cases in #602. Thanks!

docs/topics/credits.md

@@ -94,6 +94,7 @@ The following people have helped make REST framework great.
 * Steve Gregory - [steve-gregory]
 * Federico Capoano - [nemesisdesign]
 * Bruno Renié - [brutasse]
+* Kevin Stone - [kevinastone]
 
 Many thanks to everyone who's contributed to the project.
 
@@ -223,3 +224,4 @@ You can also contact [@_tomchristie][twitter] directly on twitter.
 [steve-gregory]: https://github.com/steve-gregory
 [nemesisdesign]: https://github.com/nemesisdesign
 [brutasse]: https://github.com/brutasse
+[kevinastone]: https://github.com/kevinastone