Bug with file sending

[maxd]

Right now airbone has a bug which block file sending. Look at this line. As you can see this line always convert body Hash to string. In my case it is cause error:

Encoding::UndefinedConversionError:
  "\xFF" from ASCII-8BIT to UTF-8

because my image file contains data incompatible with UTF-8 encoding.

I found the following workaround:

response = RestClient.post(get_url('/test'), {
    description: 'Bla-bla-bla',
    image: File.new(Rails.root.join('spec', 'fixtures', 'files', 'photo.jpg'), 'rb')
  })
self.instance_variable_set(:@response, response)

As you can see I just send request directly through RestClient (don't use airbone wrappers).

@sethpollack Could you please fix this problem with sending files over airbone?