readme : add stable-diffusion example (#447)

README.md

@@ -45,6 +45,7 @@ Some of the development is currently happening in the [llama.cpp](https://github
 - [X] Example of CLIP inference [monatis/clip.cpp](https://github.com/monatis/clip.cpp)
 - [X] Example of MiniGPT4 inference [Maknee/minigpt4.cpp](https://github.com/Maknee/minigpt4.cpp) 
 - [X] Example of ChatGLM inference [li-plus/chatglm.cpp](https://github.com/li-plus/chatglm.cpp)
+- [X] Example of Stable Diffusion inference [leejet/stable-diffusion.cpp](https://github.com/leejet/stable-diffusion.cpp)
 
 ## Whisper inference (example)