Add 'New Music' app to showcase

Summary: Closes https://github.com/facebook/react-native/pull/7285

Differential Revision: D3240438

fb-gh-sync-id: 02304618215c46197fa5d7547ffdb950502bcf28
fbshipit-source-id: 02304618215c46197fa5d7547ffdb950502bcf28

website/src/react-native/showcase.js

@@ -597,6 +597,12 @@ var apps = [
     icon: 'https://lh3.googleusercontent.com/5N0WYat5WuFbhi5yR2ccdbqmiZ0wbTtKRG9GhT3YK7Z-qRvmykZyAgk0HNElOxD2JOPr=w300-rw',
     link: 'https://play.google.com/store/apps/details?id=com.rhyble.nalathekerala',
     author: 'Rhyble',
+  },
+  {
+    name: 'New Music - keep track of the latest album releases',
+    icon: 'http://a4.mzstatic.com/us/r30/Purple49/v4/6f/4f/39/6f4f39db-e0ca-c80a-73e7-68830675e11b/icon175x175.png',
+    link: 'https://itunes.apple.com/app/new-music-keep-track-latest/id1104646834',
+    author: 'Alexey Ledak',
   },
 	{
     name: 'No Fluff: Hiragana',