Put the presence_sub test back in.
Put the presence_sub test back in.

slackapi/node-slack-sdk,slackhq/node-slack-client,slackapi/node-slack-sdk,slackhq/node-slack-sdk,peernohell/node-slack-client,slackapi/node-slack-sdk,slackapi/node-slack-sdk,peernohell/node-slack-client