Add Heroku Deploy button

jpadilla · jpadilla · commit 5255c0aa1ce8 · 2018-01-04T17:29:14.000-05:00
diff --git a/README.md b/README.md
@@ -3,3 +3,5 @@
 Source code for the [Django REST framework tutorial][tut].
 
 [tut]: http://www.django-rest-framework.org/tutorial/1-serialization
+
+[![Deploy](https://www.herokucdn.com/deploy/button.svg)](https://heroku.com/deploy)
