Added .setResponseType handling

[juskrey]

Suitable for e.g. arraybuffers requests. Takes standard values, as in goog.net.XhrIo.ResponseType
Example:

(http/get "http://example.com/some-binary-api" 
                              {:with-credentials? false 
                               :response-type "arraybuffer"})

Defaults to ""

In the returned map, adds :response-type key, which returns (.getResponseType target) for response consistency checking and
:response, which returns (.getResponse target), the proper way of handling non-default request types.

[teropa]

+1

[danskarda]

Any chance this pull request gets merged? Thank you.

[r0man]

@danskarda I agree that we should return the response under the :body key in this case as well. Updated patch with tests welcome!

Also, is this only working in Webkit?

http://closure-library.googlecode.com/git-history/docs/class_goog_net_XhrIo.html

[juskrey]

I'll look into it, considering the new updates (plus the comment about optional :body).

[edbond]

Definitely should be added, I'm downloading torrent files and need a binary option. Have to switch to cljs-ajax for now.