Send messages to slack.com from command line with nodejs.
npm install node-slack-cli -g
To send to slack.com you need set the SLACK TOKEN as environment variable
export SLACK_TOKEN="slack-token"
You can get the Slack token from https://api.slack.com/web#auth
slack -c slackChannelName -m "message to send"
Set a username
slack -c slackChannelName -m "message to send" -u myUsername