Add OSL blurb.

llvm-svn: 156731

llvm/docs/ReleaseNotes.html

@@ -290,6 +290,24 @@ Release Notes</a>.</h1>
 
 </div>
 
+<h3>Open Shading Language</h3>
+
+<div>
+
+<p>Open Shading Language (OSL) is a small but rich language for programmable
+   shading in advanced global illumination renderers and other applications,
+   ideal for describing materials, lights, displacement, and pattern
+   generation. It uses LLVM to JIT complex shader networks to x86 code at
+   runtime.</p>
+
+<p>OSL was developed by Sony Pictures Imageworks for use in its in-house
+   renderer used for feature film animation and visual effects, and is
+   distributed as open source software with the "New BSD" license. Its project
+   home page is:
+ <a href"http://github.com/imageworks/OpenShadingLanguage/">http://github.com/imageworks/OpenShadingLanguage/</a></p>
+
+</div>
+
 <h3>Pure</h3>
 
 <div>