update README.md

update README.md

Author: QianMo

Media/Gems1.jpg

@@ -8,6 +8,7 @@ CD Content ( Source Code ) of Book <GPU Gems 1~3>
 
 
 ## <GPU Gems 1> CD Conents
+![](Media/gems1.jpg)
 
 ### Natural Effects
 
@@ -68,6 +69,8 @@ CD Content ( Source Code ) of Book <GPU Gems 1~3>
 
 ## <GPU Gems 2> CD Conents
 
+![](Media/gems2.jpg)
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 ### Geometric Complexity
 
 - [Ch. 02: Terrain Rendering using GPU-Based Geometry Clipmaps](/GPU-Gems-2-CD-Content/Geometric_Complexity/Ch_02_Terrain_Rendering_using_GPU-Based_Geometry_Clipmaps)
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 <br>
 
+## <GPU Gems 2> CD Conents
+
+![](Media/gems3.jpg)
+
+- todo
+
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 # <GPU Gems> Full Book Web Version
 
 - [<GPU Gems 1> Full Book Web Version](https://developer.nvidia.com/gpugems/GPUGems/gpugems_pref01.html)