Add Penguin Publishing (#686)

Added Penguin Publishing API

Add Penguin Publishing (#686)
Added Penguin Publishing API
207eee0d · Jerry Muzsik · Dave Machado · 005943dd · 207eee0d
Commit 207eee0d authored Jun 10, 2018 by Jerry Muzsik Committed by Dave Machado Jun 10, 2018
--- a/README.md
+++ b/README.md
@@ -111,6 +111,7 @@ API | Description | Auth | HTTPS | CORS | Link |
 | Goodreads | Books | `apiKey` | Yes | Unknown | [Go!](https://www.goodreads.com/api) |
 | Google Books | Books | `OAuth` | Yes | Unknown | [Go!](https://developers.google.com/books/) |
 | Open Library | Books, book covers, and related data | No | Yes | Unknown | [Go!](https://openlibrary.org/developers/api) |
+| Penguin Publishing | Books, book covers, and related data | No | Yes | Unknown | [Go!](http://www.penguinrandomhouse.biz/webservices/rest/) |

 ### Business
 API | Description | Auth | HTTPS | CORS | Link |