Support for Slack app tokens

[FalconerTC]

Slack app webhooks only allow you to post to a single channel. The incoming webhooks app let's you send to any channel, but it's considered legacy. Using tokens with a Slack app would let you post to multiple channels with the same token. There are a couple of different Github slack notifying apps that support this

[titimoby]

I don't know if support has been officially released but I just made a sample repo to check and it seems to be working (except SLACK_ICON and SLACK_ICON_EMOJI that doesn't work apparently)

[ajay-ca]

@titimoby Could you tell me how did you do that?? I mean in which parameter did you use to put that token??