Add `herokaiOnly`
We don't need a function for `isHerokai`

- Also, redirect should be 301, which is the default
Update readme
Merge pull request #1 from jclem/master

Allow stubbing different users
Align lines :cop:
Client accepts different options
Add client helper accepting custom options
:guardsman: :gb:
No need to specify port
It doesn't set headers after redirect

- `Error: Can't set headers after they are sent.`
Open/close connection properly
Reboot client for every spec in middleware-test
passing tests
Merge pull request #7 from jclem/pr/6

herokaiOnly