Hubot を Heroku で動かして Slack から話す ref: http://qiita.com/bouzuya/items/2a200c9e8a45e2478bc2

file0.txt

$ pwd
/home/bouzuya/uran

$ npm list hubot-slack
uran@0.0.0 /home/bouzuya/uran
└── hubot-slack@2.2.0 

file1.txt

$ npm install --save hubot-slack
hubot-slack@2.2.0 node_modules/hubot-slack

$ npm list hubot-slack
uran@0.0.0 /home/bouzuya/uran
└── hubot-slack@2.2.0 

file2.txt

$ cat Procfile
web: bin/hubot -a slack -n uran

file3.txt

$ git init
Initialized empty Git repository in /home/bouzuya/uran/.git/

$ git add -A

$ git commit -m 'initial commit'
[master (root-commit) 4d258e3] initial commit
 10 files changed, 329 insertions(+)
 create mode 100644 .editorconfig
 create mode 100644 .gitignore
 create mode 100644 Procfile
 create mode 100644 README.md
 create mode 100755 bin/hubot
 create mode 100644 bin/hubot.cmd
 create mode 100644 external-scripts.json
 create mode 100644 hubot-scripts.json
 create mode 100644 package.json
 create mode 100644 scripts/example.coffee

$ heroku create
Creating damp-atoll-2068... done, stack is cedar-14
https://damp-atoll-2068.herokuapp.com/ | git@heroku.com:damp-atoll-2068.git
Git remote heroku added

$ git push heroku master

...(略)...

file4.txt

$ heroku config:set \
> HUBOT_SLACK_TOKEN=go7CWIlD19muTtqBflqnw3Mk \
> HUBOT_SLACK_TEAM=bouzuya \
> HUBOT_SLACK_BOTNAME=uran
Setting config vars and restarting damp-atoll-2068... done, v4
HUBOT_SLACK_BOTNAME: uran
HUBOT_SLACK_TEAM:    bouzuya
HUBOT_SLACK_TOKEN:   go7CWIlD19muTtqBflqnw3Mk