Add pipeline tag, link to paper

This PR ensures the model can be viewed from https://huggingface.co/papers/2305.16037, and adds a dedicated pipeline tag.

Cheers!

README.md

@@ -1,5 +1,9 @@
+---
+pipeline_tag: text-to-image
+---
+
 # GenerateCT: Text-Conditional Generation of 3D Chest CT Volumes
-Welcome to the official page of GenerateCT, a pioneering project in text-conditional 3D medical image generation, with a particular focus on chest CT volumes.
+Welcome to the official page of [GenerateCT](https://huggingface.co/papers/2305.16037), a pioneering project in text-conditional 3D medical image generation, with a particular focus on chest CT volumes.
 
 Here, you will find trained models for text-to-CT generation and a large dataset of synthetic CT volumes generated by GenerateCT based on text prompts, all freely accessible to researchers.
 
@@ -37,4 +41,4 @@ When using this resource, please consider citing the following related papers:
 ```
 
 ## License
-Our work, including the codes, trained models, and generated data, is released under a [Creative Commons Attribution (CC-BY) license](https://creativecommons.org/licenses/by/4.0/). This means that anyone is free to share (copy and redistribute the material in any medium or format) and adapt (remix, transform, and build upon the material) for any purpose, even commercially, as long as appropriate credit is given, a link to the license is provided, and any changes that were made are indicated. This aligns with our goal of facilitating progress in the field by providing a resource for researchers to build upon. 
+Our work, including the codes, trained models, and generated data, is released under a [Creative Commons Attribution (CC-BY) license](https://creativecommons.org/licenses/by/4.0/). This means that anyone is free to share (copy and redistribute the material in any medium or format) and adapt (remix, transform, and build upon the material) for any purpose, even commercially, as long as appropriate credit is given, a link to the license is provided, and any changes that were made are indicated. This aligns with our goal of facilitating progress in the field by providing a resource for researchers to build upon.