If you don’t already have a Slack account and workspace, go ahead and create one by going to https://slack.com/. Once you've created your workspace and added a few channels, you will create an incoming webhook, which will expose a custom token for fastlane to leverage to post messages to specific channels.
Incoming webhooks are a simple way to post messages from external sources into Slack. They make use of normal HTTP requests with JSON payloads, which includes the message and a few other optional details.
From either your Slack desktop app or via the website, once logged in, go to Custom Integrations | Incoming WebHooks to commence configuring and exposing our Webhook URL.
Following the instructions on the subsequent page, you should get a Webhook URL that you will need to note down, as we will be using...
