fix hcard when parsing friend photo

lib/hcard.rb

@@ -11,7 +11,7 @@ module HCard
     {:given_name => doc.css(".given_name").text,
     :family_name => doc.css(".family_name").text,
     :url => doc.css("#pod_location").text,
-    :photo => doc.css(".photo[src]").text}
+    :photo => doc.css(".photo[src]").attribute('src').text     }
   end
 
   def self.find url