change #active specs to use WebMock

spec/subscription_plan_spec.rb

@@ -41,18 +41,21 @@
       RSpreedly::SubscriptionPlan.all.select{|x| x.is_a?(RSpreedly::SubscriptionPlan )}.size.should == 4
     end
   end
-  
+
   describe ".active" do
     it "should return an empty array if there are no plans at all" do
-      stub_http_with_fixture("no_plans.xml", 200)
+      stub_request(:get, spreedly_url("/subscription_plans.xml")).
+        to_return(:body => fixture("no_plans.xml"), :status => 200)
       RSpreedly::SubscriptionPlan.active.should == []
     end
 
     it "should return an array of active SubscriptionPlans if there are any to find" do
-      stub_http_with_fixture("subscription_plan_list.xml", 200)
+      stub_request(:get, spreedly_url("/subscription_plans.xml")).
+        to_return(:body => fixture("subscription_plan_list.xml"), :status => 200)
+
       RSpreedly::SubscriptionPlan.active.size.should == 2
       RSpreedly::SubscriptionPlan.active.select{|x| x.is_a?(RSpreedly::SubscriptionPlan )}.size.should == 2
     end
   end
-  
+
 end