Update to fix code.

This code has 3 errors. I'd like to fix those.

README.md

@@ -46,7 +46,7 @@ from diffusers.utils import export_to_gif
 
 
 ckpt_id = "openai/shap-e"
-pipe = ShapEPipeline.from_pretrained(repo).to("cuda")
+pipe = ShapEPipeline.from_pretrained(ckpt_id).to("cuda")
 
 
 guidance_scale = 15.0
@@ -55,10 +55,10 @@ images = pipe(
     prompt,
     guidance_scale=guidance_scale,
     num_inference_steps=64,
-    size=256,
+    frame_size=256,
 ).images
 
-gif_path = export_to_gif(images, "shark_3d.gif")
+gif_path = export_to_gif(images[0], "shark_3d.gif")
 ```
 
 ## Results