Fix broken link.

README.md

diff --git a/README.md b/README.md
index 71bb19b..82d9964 100644
--- a/README.md
+++ b/README.md
@@ -59,12 +59,10 @@
 
 ### WebGL test 
 
-The "WebGL" directory contains two very simple WebGL demos that use the transcoder compiled to wasm with [emscripten](https://emscripten.org/). 
+The "WebGL" directory contains two very simple WebGL demos that use the transcoder compiled to wasm with [emscripten](https://emscripten.org/). See more details [here](webgl/README.md).
 
-See more details [here](webgl/README.md).
-
-![](texture-demo.png)
-![](model-demo.png)
+![Screenshot of 'texture' example running in a browser.](webgl/texture/preview.png)
+![Screenshot of 'gltf' example running in a browser.](webgl/gltf/preview.png)
 
 ### Transcoder details