Add glslang to LICENSE information

LICENSE.md

@@ -81,3 +81,7 @@ RenderDoc also uses several external libraries and components which include thei
 - [tinyexr](https://github.com/syoyo/tinyexr)
   distributed under the New BSD License (3 Clause).
   Copyright 2014, Syoyo Fujita
+
+- [glslang](https://github.com/KhronosGroup/glslang)
+  distributed under the New BSD License (3 Clause).
+  Copyright 2002-2005 3Dlabs Inc. Ltd. 2012-2013 LunarG, Inc.

docs/Credits.aml

@@ -124,6 +124,14 @@
 <linkText>tinyexr</linkText>
 <linkAlternateText>Used for the OpenEXR file loading and saving.</linkAlternateText>
 <linkUri>https://github.com/syoyo/tinyexr</linkUri>
+</externalLink>
+  </para></listItem>
+
+  <listItem><para>
+  <externalLink>
+<linkText>glslang</linkText>
+<linkAlternateText>Used for compiling GLSL to SPIR-V.</linkAlternateText>
+<linkUri>https://github.com/KhronosGroup/glslang</linkUri>
 </externalLink>
   </para></listItem>