Thanks for supporting HTTPClient.
httpclient changed Message#body method as an alias of Message#content
from 2.2.0. This change keeps both httpclient 2.2.0 and < 2.2.0
Sorry for this trouble (my bad), but I want this change to be pulled.
Improve HTTPClient versions compatibility.
Oops. Just after submitting this I found another person already submitted a pull request: #85
It's just the same. I close this as 'duplicate'.