add support for "soft-descritor" field as described in version 2.0.2 …

…of the integration manual

lib/cielo/order.rb

@@ -8,5 +8,6 @@ class Order
     element :currency, String, :tag => "moeda"
     element :time, Time, :tag => "data-hora", :on_save => proc { |value| value.strftime("%Y-%m-%dT%H:%M:%S") }
     element :language, String, :tag => "idioma"
+    element :soft_descriptor, String, :tag => "soft-descriptor"
   end
 end

spec/cielo/order_spec.rb

@@ -21,4 +21,17 @@
 
     xml.should == File.read(File.expand_path("../../fixtures/order.xml", __FILE__))
   end
+
+  describe "with soft descriptor" do
+    it "#to_xml" do
+      subject.number = 285813768
+      subject.total = 1
+      subject.currency = 986
+      subject.time = Time.now
+      subject.language = "PT"
+      subject.soft_descriptor = "CieloX Store"
+
+      expect(subject.to_xml).to eq(File.read(File.expand_path("../../fixtures/order_2.xml", __FILE__)))
+    end
+  end
 end

spec/fixtures/order_2.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<dados-pedido>
+  <numero>285813768</numero>
+  <valor>100</valor>
+  <moeda>986</moeda>
+  <data-hora>2010-07-14T13:56:12</data-hora>
+  <idioma>PT</idioma>
+  <soft-descriptor>CieloX Store</soft-descriptor>
+</dados-pedido>