Deploy app to heroku

[rajvaibhavdubey]

This is a

• Bug report
• Feature request

Current behaviour

Temporarily app should be deployed to heroku.

[Dishebh]

@rajvaibhavdubey if it is still up for grabs, can I take it?

[mariobehling]

@Dishebh Yes, please go ahead. Please deploy app automatically on each merged PR to Heroku on each merged PR.

[pranavkarthik10]

@mariobehling I successfully setup automatic deployment of yaydoc from my fork of the GitHub repository to heroku. It is currently available at yaydoc-gci.herokuapp.com. Because heroku requires OAuth access from GitHub for auto-deployment, it is currently limited to only merged PR's and commits from my fork of the repository. If I can get collaborator access to the main repository, I can set it up for fossasia's original repo.