restor the response object

[yalishizhude]

I'm strongly against to modify response object, for 2 reasons:

1. It will conflict with a response object has the same property "status".
2. It calls the mergeObjects function which forcely changes the response(maybe it's a string,array,number or sth else) to an object.That's really a bad thing!

[coveralls]

Coverage decreased (-0.06%) to 97.561% when pulling 717789d on yalishizhude:master into 4c49a5e on A:master.