Update README.md

README.md

@@ -17,6 +17,7 @@ This dataset contains two variants, **Kuzushiji-MNIST** and **Kuzushiji-49**.
 
 **Kuzushiji-49**, as the name suggests, has 49 classes, is a much larger, but imbalanced dataset containing 48 Hiragana characters and one Hiragana iteration mark.
 
+- **License:** CC BY-SA 4.0
 
 ### Dataset Sources