Update README with block diagram

Change-Id: Icabfa374a49b9054871d768b4c5c89e915b45cf9
diff --git a/README.md b/README.md
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 # ISPYocto
 
-ISPYocto is a member of VeriSilicon ISP IP based on the ISP8000 family customized for Open Se Cura.
+ISPYocto is a member of VeriSilicon ISP IP based on the ISP8000 family
+customized for Open Se Cura.
+
+![Yocto Block Diagram](doc_imgs/yocto_diagram.png)
diff --git a/doc_imgs/yocto_diagram.png b/doc_imgs/yocto_diagram.png
new file mode 100644
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