Return response object on failure about oboe.js

[jimhigson]

There isn't but this shouldn't be difficult to add. The jQuery syntax looks ok:

.fail(function( jqXHR, textStatus, errorThrown ) {});

I made a branch for this here.

TODO:

• needs an integration test in test/specs/oboe.integration.spec.js and something that returns non-200 errors with bodies in test/streamsource.js
• probably needs some similar code for running under node
• other places that throw errors need to match this interface
• update docs
• something else?

If you can help pull requests would be awesome.

[jimhigson]

I just merged a new failure API into master which gives the error bodies and other information.