Fixed failing webhook due to invalid reference

Author: squidfunk

CHANGELOG

@@ -1,3 +1,7 @@
+terraform-aws-github-ci-0.4.2 (2017-04-12)
+
+  * Fixed #10: Webhook fails due to invalid reference
+
 terraform-aws-github-ci-0.4.1 (2017-04-01)
 
   * Fixed #5: Removed default for namespace variable
@@ -18,7 +22,7 @@ terraform-aws-github-ci-0.2.0 (2017-12-02)
 
 terraform-aws-github-ci-0.1.1 (2017-11-15)
 
-  * Fixed missing lambda distribution files
+  * Fixed missing distribution files
   * Fixed invalid source location for initial status badge
 
 terraform-aws-github-ci-0.1.0 (2017-11-15)

share/lambda/dist/status.zip

@@ -90,7 +90,7 @@ if (process.env.GITHUB_OAUTH_TOKEN)
  */
 export default (event: GitHubWebhookEvent, _: Context, cb: Callback) => {
   event.Records.reduce((promise, record) => {
-    const type = record.Sns.MessageAttributes!["X-Github-Event"].StringValue
+    const type = (record.Sns.MessageAttributes!["X-Github-Event"] as any).Value
     const message: GitHubSourceChange = JSON.parse(record.Sns.Message)
 
     /* Retrieve commit SHA and reference */