Add v-1-3 training summary.

README.md

@@ -19,7 +19,14 @@ extra_gated_fields:
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 # Stable Diffusion v1 Model Card
-This model card focuses on the model associated with the Stable Diffusion v1-3 model, available [here](https://github.com/CompVis/stable-diffusion).
+
+Stable Diffusion is a latent text-to-image diffusion model capable of generating photo-realistic images given any text input.
+
+The **Stable-Diffusion-v-1-3** checkpoint was initialized with the weights of the [Stable-Diffusion-v1-2](https:/steps/huggingface.co/CompVis/stable-diffusion-v-1-2-original) 
+checkpoint and subsequently fine-tuned on 195,000 steps at resolution `512x512` on "laion-improved-aesthetics" and 10 % dropping of the text-conditioning to improve [classifier-free guidance sampling](https://arxiv.org/abs/2207.12598).
+
+For more information, please refer to [Training](#training).
+
 
 ## Model Details
 - **Developed by:** Robin Rombach, Patrick Esser