update README.md

README.md

@@ -46,6 +46,15 @@ git clone https://huggingface.co/datasets/lh9171338/Wireframe
 from datasets import load_dataset
 
 ds = load_dataset("lh9171338/Wireframe")
+# or load from `refs/convert/parquet` for acceleration
+# from datasets import load_dataset, Features, Image, Sequence, Value
+# features = Features({
+#     "image": Image(),
+#     "image_file": Value("string"),
+#     "image_size": Sequence(Value("int32")),
+#     "lines": Sequence(Sequence(Sequence(Value("float32")))),
+# })
+# ds = load_dataset("lh9171338/Wireframe", features=features, revision="refs/convert/parquet")
 print(ds)
 # DatasetDict({
 #     train: Dataset({