Support multiple references

lib/wpscan/vulnerable.rb

@@ -31,7 +31,7 @@ class Vulnerable
     xml.xpath(@vulns_xpath).each do |node|
       vulnerabilities << WpVulnerability.new(
         node.search("title").text,
-        node.search("reference").text,
+        node.search("reference").map(&:text),
         node.search("type").text
       )
     end

lib/wpscan/wp_vulnerability.rb

@@ -17,11 +17,11 @@
 #++
 
 class WpVulnerability
-  attr_accessor :title, :reference, :type
+  attr_accessor :title, :references, :type
 
-  def initialize(title, reference, type)
+  def initialize(title, references, type)
     @title      = title
-    @reference  = reference
+    @references = references
     @type       = type
   end
 end