Merge pull request #677 from KhronosGroup/pjcozzi-patch-3

Added "PBR in glTF: Current State" slides

README.md

@@ -92,6 +92,7 @@ Diagram by [Marco Hutter](http://marco-hutter.de/) ([repo](https://github.com/ja
 * [Using Quantization with 3D Models](http://cesiumjs.org/2016/08/08/Cesium-web3d-quantized-attributes/) by Rob Taglang. August 2016
 * [glTF and Mobile VR: Inclusive standards for a 3D world](https://www.khronos.org/assets/uploads/developers/library/2016-siggraph/glTF-MobileVR-Oculus-BOF-Update-SIGGRAPH_Jul16.pdf). Amanda Watson, Oculus, WebGL + glTF BOF. July 2016
 * [glTF Update and Roadmap](https://www.khronos.org/assets/uploads/developers/library/2016-siggraph/glTF-BOF-Update-SIGGRAPH_Jul16.pdf). Tony Parisi, WebGL + glTF BOF. July 2016
+* [PBR in glTF: Current State](https://www.khronos.org/webgl/wiki_1_15/images/2016-07-28_WebGL_BOF_PBR.pdf). Max Limper, Johannes Behr, and Timo Sturm, WebGL + glTF BOF. July 2016
 * [glTF working group updates](https://www.khronos.org/assets/uploads/developers/library/2016-gdc/glTF-GDC_Mar16.pdf) ([slides](https://www.khronos.org/assets/uploads/developers/library/2016-gdc/glTF-GDC_Mar16.pdf), [video](https://www.youtube.com/watch?v=qAjWiVfR5Nw&t=43m40s)). Patrick Cozzi and Tony Parisi, WebGL + glTF BOF. March 2016
 * [FBX to/from glTF](https://www.khronos.org/assets/uploads/developers/library/2016-gdc/Autodesk-FBX-glTF-WebGL_Mar16.pdf) ([slides](https://www.khronos.org/assets/uploads/developers/library/2016-gdc/Autodesk-FBX-glTF-WebGL_Mar16.pdf), [video](https://www.youtube.com/watch?v=qAjWiVfR5Nw&t=59m08s)). Cyrille Fauvel, WebGL + glTF BOF. March 2016
 * [Khronos Group glTF Webinar](https://www.youtube.com/watch?v=YXPeh2hy6Tc). Neil Trevett, Virtual AR Community meeting. October 2015