- Set `grunt build` as the build script
- Disable testing and deployment options
- Customise the Slack integration message
- Only show the Slack message when the status changes
See #44276.
git-svn-id: https://develop.svn.wordpress.org/trunk@44595 602fd350-edb4-49c9-b593-d223f7449a82
AppVeyor allows us to test in a Windows environment. This first iteration tests that building works correctly.
Props netweb.
Fixes#44276.
git-svn-id: https://develop.svn.wordpress.org/trunk@44594 602fd350-edb4-49c9-b593-d223f7449a82