heroku/heroku — pull request #990 by raulb (2014-01-06 22:39:29+00:00)
Title: When a member exists, it returns 302

302 Found is returned when the person is already an org member.

Otherwise...

```
$ h sudo members:add simeone@heroku.com -o heroku --role admin
Adding simeone@heroku.com as admin to organization heroku... failed
! Internal server error.
```