Update README.md

Author: Clivern

README.md

@@ -42,7 +42,7 @@ Start sending metrics
 $ echo "foo:1|c" | nc -u -w0 127.0.0.1 8125
 ```
 
-To run a sample consumer for testing
+To run a simple consumer for testing
 
 ```js
 $ npm install amqplib