Update README.md

This dataset includes images of genuine and counterfeit currency from the first set of RMB/Renminbi. Part of the genuine currency are samples of prototype banknotes.
The first set of RMB/Renminbi is incredibly rare, and gathering data has been challenging. Your contributions are welcome.

README.md

@@ -1,3 +1,12 @@
----
-license: mit
----
+---
+license: mit
+task_categories:
+- image-classification
+tags:
+- RMB
+- currency
+- antique
+- identification
+size_categories:
+- n<1K
+---