Updated readme.

README.md

@@ -1,14 +1,22 @@
 bgfx
 ====
 
-Rendering library. Supports OpenGL/ES 2.0 and Direct3D 9.0.
+Rendering library.
+
+Supports:
+OpenGL 2.1, OpenGL ES 2.0, and Direct3D 9.0.
+
+Platforms:
+Windows, Linux, Android, and Native Client.
 
 Contact
 -------
 
-Twitter @bkaradzic
+[@bkaradzic](https://twitter.com/bkaradzic)  
+http://www.stuckingeometry.com
 
-Web http://www.stuckingeometry.com
+Project page  
+https://github.com/bkaradzic/bgfx
 
 License
 -------

src/glimports.h

@@ -7,6 +7,12 @@
 #	error GL_IMPORT(_optional, _proto, _func) must be defined!
 #endif // GL_IMPORT
 
+// OpenGL 2.1 Reference Pages
+// http://www.opengl.org/sdk/docs/man/
+//
+// OpenGL ES 2.0 Reference Pages
+// http://www.khronos.org/opengles/sdk/docs/man/
+
 GL_IMPORT(false, PFNGLACTIVETEXTUREPROC,            glActiveTexture);
 GL_IMPORT(false, PFNGLCOMPRESSEDTEXIMAGE2DPROC,     glCompressedTexImage2D);
 GL_IMPORT(false, PFNGLBINDBUFFERPROC,               glBindBuffer);