RestKit/RestKit — pull request #958 by rchampourlier (2012-10-01 13:45:52+00:00)
Title: Corrected RKURL#URLByAppendingQueryParameters: was clearing URL's resource path

When creating a new `RKURL` through `#URLByAppendingQueryParameters`, the `resourcePath` was set to nil.

I think this now matches the [documentation](http://restkit.org/api/0.10.3/Classes/RKURL.html#//api/name/URLByAppendingQueryParameters:).