Using sinon.xhr to fake XHR response status code.
Using sinon.xhr to fake XHR response status code.

ISO tests for the moment.

ZeboFranklin/tal,joeyjojo/tal,joeyjojo/tal,ZeboFranklin/tal,joeyjojo/tal,ZeboFranklin/tal,joeyjojo/tal,joeyjojo/tal,ZeboFranklin/tal,ZeboFranklin/tal