Restart your Heroku app with a Hubot script.

heroku-app-commands.coffee

# Description:
#   Ask Hubot to perform actions on Heroku
#
# Dependencies:
#   None
#
# Configuration:
#   None
#
# Commands:
#   hubot heroku restart -a <application name>
#
# Author:
#   jfriedlaender

# You need to add your api key as a environment variable to hubot, also your user email address.
herokuApiKey = process.env.HEROKU_CONFIG_API_KEY
herokuUser = process.env.HEROKU_CONFIG_USER

module.exports = (robot) ->
  robot.respond /heroku restart -a (.*)/i, (msg) ->
    application = msg.match[1]
    msg.send "Starting the restart process for #{application}..."
    msg.http("https://api.heroku.com/apps/#{application}/ps/restart")
      .headers(Authorization: "Basic #{new Buffer("#{herokuUser}:#{herokuApiKey}").toString("base64")}", Accept: "application/json", 'Content-Length': 0)
      .post() (err, res, body) ->
        try
          if res.statusCode is 200
            msg.send "Restarted #{application}"
            return

          msg.send JSON.parse(body).error

        catch ex
          msg.send "Oh no! Something didn't go so well... #{ex}"