Multi-word string keys break on retrieval

[daveliepmann]

When using get-view to retrieve a document that has a multi-word key like "foo bar", clutch creates a single-word keyword out of the first word, like :foo bar, which breaks the map. This seems to be caused by (json/parse-string true) on lines 98 and 103 of http_client.clj.

I apologize for not submitting a fix via PR; I'm a bit pressed for time—as I'm sure we all are. I suspect the best resolution would be to optionally pass a parameter to get-view to control whether keywords are keywordized.