Rundeck runner

Need to add 3 env vars to heroku:
* RUNDECK_PTOPIA_JID
* HUBOT_RUNDECK_TOKEN
* HUBOT_RUNDECK_URL

To test you can use:
`RUNDECK_PTOPIA_JID=5b6b227f-17e5-4c36-b27f-6c737bef057c` 
That JID is the "Test echo" job which is set up like the "deploy - ptopia" job 

It will take in a branch name from the deploy manifest and echo `I am a <branch_name>`

I would probably use `split` and `_.each`...

```coffee
job_ids = {}
_.each process.env.HUBOT_RUNDECK_JIDS.split(','), (job) ->
  [ job, jid ] = job.split(':')
  job_ids[job] = jid
```

And then later, instead of passing just the branch, pass the entire manifest (it's free, these emits are just function calls behind the scenes).  Then you can access it via:

```coffee
do_thing_with job_ids[manifest.repo]
```