User-Agent is required by Github's API.

I've used grunt-release as value, this is something Github uses in case of problems, as documented here http://developer.github.com/v3/#user-agent-required
Insert missing commas into example options

Discovered, ironically, by me trying to `js2coffee` them.
Merge pull request #60 from lazywithclass/adding-user-agent

User-Agent is required by Github's API.
Merge pull request #62 from searls/patch-1

Insert missing commas into example options
release 0.6.1
add q dependency
significant refactor: use promises, fail loudly, consistent logs
(test) disable push option during tests
release 0.7.0
update docs
added shrinkwrap
If shrinkwrapping, checkin npm-shrinkwrap.json
merging