Update README.md

README.md

@@ -60,6 +60,7 @@ We currently provide the following checkpoints:
 - [stablesr_000117.ckpt](https://huggingface.co/Iceclear/StableSR/resolve/main/stablesr_000117.ckpt): Diffusion model finetuned on [SD2.1-512base](https://huggingface.co/stabilityai/stable-diffusion-2-1-base) with DF2K_OST dataset for 117 epochs.
 - [vqgan_cfw_00011.ckpt](https://huggingface.co/Iceclear/StableSR/resolve/main/vqgan_cfw_00011.ckpt): CFW module with fixed autoencoder trained on synthetic paired data for 11 epochs.
 - [stablesr_768v_000139.ckpt](https://huggingface.co/Iceclear/StableSR/blob/main/stablesr_768v_000139.ckpt): Diffusion model finetuned on [SD2.1-768v](https://huggingface.co/stabilityai/stable-diffusion-2-1) with DF2K_OST dataset for 139 epochs.
+- [stablesr_turbo.ckpt](https://huggingface.co/Iceclear/StableSR/resolve/main/stablesr_turbo.ckpt): StableSR with [SD-Turbo](https://huggingface.co/stabilityai/sd-turbo) achieves comparable performance with only 4-steps sampling.
 
 ## Evaluation Results 
 See [Paper](https://arxiv.org/abs/2305.07015) for details.