Added note on HLSL shaders

CREDITS.md

@@ -1,16 +1,16 @@
 ## Credits
 Thanks to the authors of these libraries :
 - [OpenGL Mathematics (GLM)](https://github.com/g-truc/glm)
-- [OpenGL Image (GLI)](https://github.com/g-truc/gli)
 - [Open Asset Import Library](https://github.com/assimp/assimp)
 
+Thanks to Ben Clayton from Google LLC for contributing the [HLSL shaders](data/hlsl).
+
 And a huge thanks to the Vulkan Working Group, Vulkan Advisory Panel, the fine people at [LunarG](http://www.lunarg.com), Baldur Karlsson ([RenderDoc](https://github.com/baldurk/renderdoc)) and everyone from the different IHVs that helped me get the examples up and working on their hardware!
 
 ## Attributions / Licenses
 Please note that (some) models and textures use separate licenses. Please comply to these when redistributing or using them in your own projects :
 - Cubemap used in cubemap example by [Emil Persson(aka Humus)](http://www.humus.name/)
 - Armored knight model used in deferred example by [Gabriel Piacenti](http://opengameart.org/users/piacenti)
-- Voyager model by [NASA](http://nasa3d.arc.nasa.gov/models)
 - Old deer model used in tessellation example by [Čestmír Dammer](http://opengameart.org/users/cdmir)
 - Hidden treasure scene used in pipeline and debug marker examples by [Laurynas Jurgila](http://www.blendswap.com/user/PigArt)
 - Sibenik Cathedral model by Marko Dabrovic, using updated version by [Kenzie Lamar and Morgan McGuire](http://graphics.cs.williams.edu/data/meshes.xml)