Adding Parse Dashboard on Heroku tutorial

Linking to Codementor.io article.

I'm assuming others can provide links to either seperate wiki pages in the project of their own blog posts (similar to how it's done on Parse-Server)

Author: mattgoldspink

README.md

@@ -149,6 +149,12 @@ docker run -d -p 80:8080 -v host/path/to/config.json:/src/Parse-Dashboard/parse-
 
 If you are not familiar with Docker, ``--port 8080`` will be passed in as argument to the entrypoint to form the full command ``npm start -- --port 8080``. The application will start at port 8080 inside the container and port ``8080`` will be mounted to port ``80`` on your host machine.
 
+## Running Parse Dashboard elsewhere
+
+It's relatively straightforward to setup Parse Dashboard on any Docker or Node.js hosting provider:
+
+- [Parse Dashboard on Heroku in 3 steps](https://www.codementor.io/nodejs/tutorial/deploy-parse-dashboard-on-heroku)
+
 ## Contributing
 
 We really want Parse to be yours, to see it grow and thrive in the open source community. Please see the [Contributing to Parse Dashboard guide](CONTRIBUTING.md).