Add missing :vcr option to a spec

Author: Lucas

spec/customer_spec.rb

@@ -75,8 +75,8 @@
     end
   end
 
-  describe '.save', :vcr do
-    it 'should save the customer' do
+  describe '.save' do
+    it 'should save the customer', :vcr do
       customer = Iugu::Customer.create(email: '[email protected]',
                                        name: 'John Snow',
                                        cpf_cnpj: '648.144.103-01',