Merge pull request #3 from NextCodeX/fix-shutdown

docs: correct the shutdown method call
diff --git a/README.md b/README.md
index b771a20..ac61441 100644
--- a/README.md
+++ b/README.md
@@ -91,7 +91,7 @@
 #### shutdown
 
 ```javascript
-producer.start([callback]);
+producer.shutdown([callback]);
 ```
 
 `.shutdown` receives a callback function. If no callback passed, this function will return a Promise object.
@@ -219,7 +219,7 @@
 #### shutdown
 
 ```javascript
-consumer.start([callback]);
+consumer.shutdown([callback]);
 ```
 
 `.shutdown` receives a callback function. If no callback passed, this function will return a Promise object.