fix README

Author: dhanielo

README.md

@@ -34,7 +34,7 @@ func main() {
 }
 ```
 
-## Usage (with IAM Role configure for ec2 or Lambda)
+## Usage (with IAM Role configured for ec2 or Lambda)
 
 ``` go
 package main
@@ -85,4 +85,4 @@ Copyright (c) 2018 Conta.MOBI
 ```
 
 [License-Url]: http://opensource.org/licenses/MIT
-[License-Image]: https://img.shields.io/npm/l/express.svg
+[License-Image]: https://img.shields.io/npm/l/express.svg