Add tags, tasks and minor formatting change

README.md

@@ -1,8 +1,14 @@
 ---
 license: unknown
-license_details: "Data files © Original Authors"
+license_details: Data files © Original Authors
 size_categories:
-  - 10K<n<100K 
+- 10K<n<100K
+task_categories:
+- image-classification
+- text-to-image
+- image-to-text
+tags:
+- art
 ---
 
 ## Dataset Description
@@ -11,7 +17,7 @@ size_categories:
 
 ### Dataset Summary
 
-Dataset containing 81444 pieces of visual art from various artists, taken from WikiArt.org,
+Dataset containing 81,444 pieces of visual art from various artists, taken from WikiArt.org,
 along with class labels for each image :
 
 * "artist" : 129 artist classes, including a "Unknown Artist" class