Cloned from https://github.com/plexinc/webhooks-slack

In order to run this app:

• Install node.js.
• Clone the repository.
• Install dependencies using npm install.
• Make a new app at Heroku, and add the Redis Cloud add-on (free plan) and note the app URL.
• Make a Slack webhook and note the URL, add it as a config var named SLACK_URL.
• Edit the options at the top of the index.js file.
• Deploy to Heroku
• Have anyone who wants to contribute add the webhook on https://app.plex.tv/web/app#!/account/webhooks