Merge pull request facebook#2511 from bradens/master

Add leanpub to the list of showcase apps.

Author: brentvatne

website/src/react-native/showcase.js

@@ -66,6 +66,12 @@ var apps = [
     link: 'https://itunes.apple.com/us/app/hsk-level-1-chinese-flashcards/id936639994',
     author: 'HS Schaaf',
   },
+  {
+    name: 'Leanpub',
+    icon: 'http://a2.mzstatic.com/us/r30/Purple6/v4/9f/4a/6f/9f4a6f8c-8951-ed89-4083-74ace23df9ef/icon350x350.jpeg',
+    link: 'https://itunes.apple.com/us/app/leanpub/id913517110?ls=1&mt=8',
+    author: 'Leanpub',
+  },
   {
     name: 'Lrn',
     icon: 'http://is4.mzstatic.com/image/pf/us/r30/Purple1/v4/41/a9/e9/41a9e9b6-7801-aef7-2400-2eca14923321/mzl.adyswxad.png',