SlackUploader

Started as a necessity to upload android apk to slack.

Instructions

Create a Slack account and obtain your token. To obtain a token go to https://api.slack.com/custom-integrations/legacy-tokens, and then create on create token
Install the plugin on Jenkins server. Go to Manage Jenkins -> Manage Plugins and select Slack Uploader from the list.
Configure your Jenkins job as a Post-Build action.
Enter the channel and the file path of the files you want to upload. Note that you should provide a full path to the like /var/jenkins_home/workspace/Android/YourJobName/app/build/outputs/apk/release/app-release.apk
Start a build and watch as the magic happens.