Add missing comma

Summary: Closes https://github.com/facebook/react-native/pull/5965

Differential Revision: D2941870

Pulled By: androidtrunkagent

fb-gh-sync-id: efec0b07dd9614fc4d3937a290c3f243cba46718
shipit-source-id: efec0b07dd9614fc4d3937a290c3f243cba46718

website/src/react-native/showcase.js

@@ -380,7 +380,7 @@ var apps = [
     icon: 'http://a3.mzstatic.com/us/r30/Purple69/v4/a2/61/58/a261584d-a4cd-cbfa-cf9d-b5f1f15a7139/icon175x175.jpeg',
     link: 'https://itunes.apple.com/app/id1031729525?mt=8&at=11l7ss&ct=reactnativeshowcase',
     author: 'Josh Buchea',
-  }
+  },
   {
     name: 'MyPED',
     icon: 'http://a2.mzstatic.com/eu/r30/Purple69/v4/88/1f/fb/881ffb3b-7986-d427-7fcf-eb5920a883af/icon175x175.png',