update readme

README.md

@@ -2,7 +2,11 @@
 license: openrail
 ---
 
-This is a pretokenized dump of [ffv4_dataset_test/score0.8](https://huggingface.co/main-horse/ffv4_dataset_test) for use with [llm-foundry](https://github.com/mosaicml/llm-foundry/). It partitions stories from the dataset such that each data sample always looks like this:
+This is a pretokenized dump of [ffv4_dataset_test/score0.8](https://huggingface.co/main-horse/ffv4_dataset_test) for use with [llm-foundry](https://github.com/mosaicml/llm-foundry/).
+
+## formatting info
+
+It partitions stories from the dataset such that each data sample always looks like this:
 
 ```
 <info><story info metadata ...></info><chunk of story>
@@ -11,4 +15,8 @@ where `<info>` and `</info>` are special tokens in my [edited mpt-7b-tokenizer](
 
 When the last token group of a story is too short to fill 2048 tokens, it ends with an `<|endoftext|>` token, and **does not contain padding**. llm-foundry adds the padding in train.py, so I did not include it here.
 
+## other info
+
+This dataset is not meant to be used with the `datasets` library; you should grab it with `git clone https://huggingface.co/datasets/main-horse/ffv4-test-4` (with Git LFS installed).
+
 Only the `train/` folder is from fimfic; the `val_c4` folder is just a garbage C4 dataset I included for llm-foundry to look at.