Docs: merge pull request playframework#348 from jamesward/master

documentation/manual/deployment.textile

@@ -1,6 +1,6 @@
 h1. Deployment options
 
-Play applications can be deployed virtually anywhere: inside Servlet containers, as standalone servers, in Google Application Engine, Stack, a Cloud, etc...
+Play applications can be deployed virtually anywhere: inside Servlet containers, as standalone servers, on Heroku, Google Application Engine, Stack, a Cloud, etc...
 
 h2. <a name="standalone">Standalone Play applications</a>
 
@@ -149,6 +149,12 @@ To scale the application to multiple ‘dynos’ run:
 
 bc. heroku scale web=2
 
+To use the "Heroku Shared Database":http://devcenter.heroku.com/articles/database in production add the following to your @conf/application.conf@ file:
+
+bc. %prod.db=${DATABASE_URL}
+%prod.jpa.dialect=org.hibernate.dialect.PostgreSQLDialect
+%prod.jpa.ddl=update
+
 Learn more in the "Heroku Dev Center":http://devcenter.heroku.com.