[Travis] Slack integration
[Travis] Slack integration

johndpope/jazzy,realm/jazzy,realm/jazzy,jeeftor/jazzy,PSPDFKit-labs/jazzy,emiscience/jazzy,emiscience/jazzy,jeeftor/jazzy,Kapeli/jazzy,pcantrell/jazzy,johndpope/jazzy,pcantrell/jazzy,agentk/jazzy,pcantrell/jazzy,1ec5/jazzy,johndpope/jazzy,Kapeli/jazzy,agentk/jazzy,Kapeli/jazzy,agentk/jazzy,1ec5/jazzy,1ec5/jazzy,jeeftor/jazzy,PSPDFKit-labs/jazzy,mbogh/jazzy,emiscience/jazzy,mbogh/jazzy,mbogh/jazzy