Add pipeline tag and Github link

This PR adds the `pipeline_tag: text-generation` to the model card metadata. This will allow the model to be correctly categorized and easily discoverable on the Hugging Face model hub. It also adds a link to the Github repository.

README.md

@@ -1,15 +1,19 @@
 ---
-library_name: transformers
-license: mit
 datasets:
 - HuggingFaceH4/ultrafeedback_binarized
 language:
 - en
+library_name: transformers
+license: mit
+pipeline_tag: text-generation
 ---
+
 # Zephyr-7B-DICE-Iter1
 
 This model was developed using [Bootstrapping Language Models with DPO Implicit Rewards](https://arxiv.org/abs/2406.09760) (DICE) at iteration 1, based on the [HuggingFaceH4/zephyr-7b-beta](https://huggingface.co/HuggingFaceH4/zephyr-7b-beta) as the starting point.
 
+Code: https://github.com/sail-sg/dice
+
 ## Links to Other Models
 - [Zephyr-7B-DICE-Iter1](https://huggingface.co/sail/Zephyr-7B-DICE-Iter1)
 - [Zephyr-7B-DICE-Iter2](https://huggingface.co/sail/Zephyr-7B-DICE-Iter2)
@@ -38,4 +42,4 @@ This model was developed using [Bootstrapping Language Models with DPO Implicit
   journal={arXiv preprint arXiv:2406.09760},
   year={2024}
 }
-```
+```