tarcieri/http — pull request #140 by yorkie (2014-06-11 08:06:19+00:00)
Title: status: add 308 because of RFC7238

see your `lib/http/redirector.rb`:
```rb
# HTTP status codes which indicate redirects
REDIRECT_CODES = [300, 301, 302, 303, 307, 308].freeze
```
And RFC7238 also listed the 308 status code as a standard one, so add it to the `status.rb`.