Add example loading previous checkpoint

README.md

@@ -6,4 +6,5 @@ datasets:
 
 35M parameter baseline [GENIE](https://arxiv.org/pdf/2402.15391) for `v1.0` and `v1.1` of the [1X World Model Challenge](https://github.com/1x-technologies/1xgpt).
 
-The default checkpoint corresponds to `v1.1`, but older versions can be loaded using the `revision` argument of `STMaskGIT.from_pretrained()`.
+The default checkpoint corresponds to `v1.1`, but older versions can be loaded using the `revision` argument. E.g. `STMaskGIT.from_pretrained("1x-technologies/GENIE_35M", revision="v1.0")`.
+