Broadcast commits to Slack.

Install Notes
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  Webhook URL is a room specific url. You can find it when setting up an incoming webhook integration.

  Channel is the channel you wish to post the message.

  Currently both parameters need to be entered explicitly. Example values are below:

  Webhook URL: https://hooks.slack.com/services/a1b2c3/d4e5f6/h7i8j9

  Channel: #testing

  For more information visit https://api.slack.com/incoming-webhooks

