Add task categories and license to metadata

README.md

@@ -4,6 +4,9 @@ configs:
   data_files:
   - split: test
     path: metadata/eval_metadata.jsonl
+task_categories:
+- text-to-image
+license: apache-2.0
 ---
 
 <div align="center">
@@ -105,4 +108,4 @@ If you find this dataset useful, please cite:
   year    = {2026},
   url     = {https://arxiv.org/abs/2607.05382}
 }
-```
+```