Add pipeline tag, library name and links to paper and code

This PR improves the model card by:
- Adding the `pipeline_tag` to the metadata, meaning it can be found at https://huggingface.co/models?pipeline_tag=text-generation
- Adding the `library_name` to the metadata
- Adding a link to the paper
- Adding a link to the Github repository
- Adding a brief description of the model

README.md

@@ -1,3 +1,11 @@
----
-license: mit
----
+---
+license: mit
+pipeline_tag: text-generation
+library_name: transformers
+---
+
+# Fine-tuning a Large Language Model for Automating Computational Fluid Dynamics Simulations
+
+This model is a fine-tuned Qwen2.5-7B-Instruct LLM for automating Computational Fluid Dynamics (CFD) simulations, as described in [Fine-tuning a Large Language Model for Automating Computational Fluid Dynamics Simulations](https://huggingface.co/papers/2504.09602). It translates natural language descriptions into executable OpenFOAM configurations.
+
+The code for the model can be found at https://github.com/YYgroup/AutoCFD.