Merge pull request #3 from simonihmig/sig-4

Use signature version 4 for authorization

Author: tomdale

index.js

@@ -5,7 +5,8 @@ const AWS  = require('aws-sdk');
 const DEFAULT_POLL_TIME = 3 * 1000;
 
 const s3 = new AWS.S3({
-  apiVersion: '2006-03-01'
+  apiVersion: '2006-03-01',
+  signatureVersion: 'v4'
 });
 
 class S3Notifier {