post-request

   func sendSlackMessage(message:String, emoji:String){
        let slackUrl = "http://your-slack-channel-url.com"
        Alamofire.request(slackUrl,
                          method: .post,
                          parameters:
                                     ["channel": "#general",
                                      "username": "Home Office Bot",
                                      "text":message, "icon_emoji":emoji],
                          encoding: JSONEncoding.default)
        .responseString{ response in
            print(response)
        }
    }