Update README with dataset and paper links, update upload script

Preserve stim_order.parquet in upload script

how to download the dataset?
Fixes #7

Author: ncarr

README.md

@@ -1,5 +1,8 @@
 # Alljoined-1.6M
 
+- **Dataset:** https://huggingface.co/datasets/Alljoined/Alljoined-1.6M
+- **Paper:** https://arxiv.org/abs/2508.18571
+
 ## Setup
 
 **Before setting up the environment, ensure you have `mamba` installed.** 

upload_hf.py

@@ -56,7 +56,6 @@
 # PATTERNS = [
 #     "**/mvnn_whitening_matrices.pkl",
 #     "**/experiment_metadata.parquet",
-#     "**/stim_order.parquet",
 #     "**/metadata.parquet",
 # ]