Get requests with query string options always return 404

[mhefferan]

Example of a breaking test:

it "should handle stubbed requests with query string that return a response" do
@host.get("/some/path?foo=true&bah=abc").returning("hello world")
@host.call(request_for("/some/path?foo=true&bah=abc")).should match_rack_response(200, {}, "hello world")
end