Update app.py

app.py

@@ -42,3 +42,10 @@ iface = gr.Interface(
 
 iface.launch()
 
+DESCRIPTION = """![Logo](https://raw.githubusercontent.com/PixArt-alpha/PixArt-alpha.github.io/master/static/images/logo.png)
+        # PixArt-Alpha 1024px
+        #### [PixArt-Alpha 1024px](https://github.com/PixArt-alpha/PixArt-alpha) is a transformer-based text-to-image diffusion system trained on text embeddings from T5. This demo uses the [PixArt-alpha/PixArt-XL-2-1024-MS](https://huggingface.co/PixArt-alpha/PixArt-XL-2-1024-MS) checkpoint.
+        #### English prompts ONLY; 提示词仅限英文
+        Don't want to queue? Try [Google Colab Demo](https://colab.research.google.com/drive/1jZ5UZXk7tcpTfVwnX33dDuefNMcnW9ME?usp=sharing). It's slower but still free.
+        """
+