Not working with react/http-client >= 0.4.13

[joelwurtz]

Q	A
Bug?	yes
New Feature?	no
Version

Actual Behavior

This library return a error when creating an response

Expected Behavior

Working :)

Steps to Reproduce

Use last version of react/http-client

Possible Solutions

We should rework the way the response is build, it's no longer working since this PR has been merged into react/http-client reactphp/http-client#66

[shulard]

I'll take a look today 😄.