Added app.json manifest and updated README with Heroku button
Improving README.
Set target=blank for Slack url in README.
Added /setup route and Heroku success redirect
New and improved README with screenshots.
Added logo to app.json
Minor tweaks.
More improvements to README. Screenshot labels and removed links from images to avoid confusion.
Replaced `route` with `get` for /setup
Simplified READM a bit, removed optional step.
Merge pull request #1 from vanjacosic/master

Simplified instructions using the Heroku Deploy button and screenshots