Fix DwollaV2::Response#inspect (#28)

Author: sobrinho

lib/dwolla_v2/response.rb

@@ -47,7 +47,7 @@ def method_missing method, *args, &block
     def inspect
       Util.pretty_inspect(
         self.class.name,
-        { response_status: status, response_headers: headers },
+        { response_status: response_status, response_headers: response_headers },
         response_body
       )
     end

spec/dwolla_v2/response_spec.rb

@@ -8,6 +8,11 @@
                    body: DwollaV2::SuperHash[foo: "bar"]
   }
 
+  it "#inspect" do
+    response = DwollaV2::Response.new raw_response
+    expect(response.inspect).to eq '#<DwollaV2::Response response_status=200 response_headers={:location=>"https://foo.bar"} {"foo"=>"bar"}>'
+  end
+
   it "#status" do
     response = DwollaV2::Response.new raw_response
     expect(response.response_status).to be raw_response.status