transformResponse catch

[richardgregory]

Hi,

I noticed the catch statement in the transformResponse method is empty (see line below).
https://github.com/mzabriskie/axios/blob/master/lib/defaults.js#L44

If JSON.parse fails for any reason, it would be good to throw an error which would presumably be caught by the promise catch statement? Or has it been omitted for a reason?

[mzabriskie]

@richardgregory yes, it was done deliberately. Current implementation is a bit dumb. If response is a string, it tries to parse the response as JSON. If it fails, it is assumed that the response must not have been JSON, fails gracefully, and passes the string response along.

See #61 for a bit more color.