README.md in grpc-rest-0.1.20 vs README.md in grpc-rest-0.1.21

@@ -150,9 +150,13 @@
     };
   }
 }
 ```
 
+## Gruf Interceptors
+
+grpc-rest supports [gruf](https://github.com/bigcommerce/gruf) Interceptors. As long as you're not using a custom interceptor
+registry, your interceptors will be called normally around the controller.
 
 ## To Do
 
 * Replace Go implementation with Ruby (+ executable)