document loading an output file from a URL

Signed-off-by: Zeke Sikelianos <[email protected]>

Author: zeke

README.md

@@ -111,6 +111,19 @@ You can list all the predictions you've run:
 [<Prediction: 8b0ba5ab4d85>, <Prediction: 494900564e8c>]
 ```
 
+Output files are returned as HTTPS URLs. You can load an output file as a buffer:
+
+```python
+import replicate
+from urllib.request import urlretrieve
+
+model = replicate.models.get("stability-ai/stable-diffusion")
+version = model.versions.get("27b93a2413e7f36cd83da926f3656280b2931564ff050bf9575f1fdf9bcd7478")
+out = version.predict(prompt="wavy colorful abstract patterns, cgsociety"
+urlretrieve(out[0], "/tmp/out.png")
+background = Image.open("/tmp/out.png")
+```
+
 ## Install
 
 ```sh