Add task category and citation

This PR adds the `image-to-text` task category to better categorize the dataset and adds a citation to the relevant paper. It also adds a link to the project page.

README.md

@@ -1,28 +1,41 @@
----
-license: apache-2.0
-dataset_info:
-  features:
-  - name: id
-    dtype: string
-  - name: image
-    dtype: image
-  - name: descriptive_q
-    dtype: string
-  - name: descriptive_a
-    dtype: string
-  - name: reasoning_q
-    dtype: string
-  - name: reasoning_a
-    dtype: string
-  splits:
-  - name: test
-    num_bytes: 277763523.0
-    num_examples: 50
-  download_size: 277777671
-  dataset_size: 277763523.0
-configs:
-- config_name: default
-  data_files:
-  - split: test
-    path: data/test-*
----
+---
+license: apache-2.0
+dataset_info:
+  features:
+  - name: id
+    dtype: string
+  - name: image
+    dtype: image
+  - name: descriptive_q
+    dtype: string
+  - name: descriptive_a
+    dtype: string
+  - name: reasoning_q
+    dtype: string
+  - name: reasoning_a
+    dtype: string
+  splits:
+  - name: test
+    num_bytes: 277763523.0
+    num_examples: 50
+  download_size: 277777671
+  dataset_size: 277763523.0
+configs:
+- config_name: default
+  data_files:
+  - split: test
+    path: data/test-*
+task_categories:
+- image-to-text
+citation: >
+  @article{deitke2024molmo,
+    title={Molmo and pixmo: Open weights and open data for state-of-the-art multimodal models},
+    author={Deitke, Matt and Clark, Christopher and Lee, Sangho and Tripathi, Rohun and Yang, Yue and Park, Jae Sung and Salehi, Mohammadreza and Muennighoff, Niklas and Lo, Kyle and Soldaini, Luca and others},
+    journal={arXiv preprint arXiv:2409.17146},
+    year={2024}
+  }
+---
+
+This dataset contains image-text pairs for various types of text-rich images including charts, diagrams, tables, and documents.
+
+[Project Page](https://yueyang1996.github.io/cosyn/)