Update README.md

Author: tungnt1203

README.md

@@ -150,6 +150,7 @@ client.datasources.drop('my_datasource')
 >Note: The SDK currently does not support automatically removing a data source if it is no longer connected to any mind.
 
 ### Other SDKs
+- [Ruby-SDK](https://github.com/tungnt1203/minds_ruby_sdk)
 - [Dart-SDK](https://github.com/ArnavK-09/mdb_dart)
 
 #### Command Line Tools