Version 2.5.0 (July 7th 2015)

Making it possible to select which events get posted to Slack thanks to #20

Version 2.4.0 (June 19th 2015)

More consistent messaging thanks to #19

Version 2.3.0 (May 28th 2015)

Make use of the Attachments API to provide more richly-formatted messages thanks to #18

Version 2.2.0 (February 5th 2015)

Support jruby thanks to #17

Version 2.1.0 (November 27, 2014)

• Send notifications when deployment fails

Version 2.0.1 (November 20, 2014)

Include an empty file to avoid auto-require issues.

Version 2.0.0 (November 14, 2014)

The Incoming Webhook URL for new Slack integrations has changed to a
different URL.

This is a breaking change - :slack_subdomain and :slack_token values
are no longer required, instead we must set :slack_url, which can be
generated for each integration by following the Incoming Webhook links
from https://api.slack.com

set :slack_url, 'https://hooks.slack.com/services/your/integration/url'