Browser::Actions specs fixes

spec/shared_examples/wp_item_existable.rb

@@ -7,7 +7,7 @@ shared_examples 'WpItem::Existable' do
       let(:response) { Typhoeus::Response.new }
 
       it 'does not create a request' do
-        Browser.instance.should_not_receive(:get)
+        Browser.should_not_receive(:get)
         subject.stub(:exists_from_response?).and_return(true)
 
         subject.exists?({}, response).should be_true
@@ -16,7 +16,7 @@ shared_examples 'WpItem::Existable' do
 
     context 'when the response is not supplied' do
       it 'creates a request' do
-        Browser.instance.should_receive(:get)
+        Browser.should_receive(:get)
         subject.stub(:exists_from_response?).and_return(false)
 
         subject.exists?.should be_false

spec/shared_examples/wp_target/wp_registrable.rb

@@ -27,7 +27,7 @@ shared_examples 'WpTarget::WpRegistrable' do
   describe '#registration_enabled?' do
     after do
       wp_target.stub(:multisite?).and_return(multisite)
-      stub_request(:get, wp_target.registration_url.to_s).to_return(@stub)
+      stub_request(:get, wp_target.registration_url).to_return(@stub)
 
       wp_target.registration_enabled?.should === @expected
     end