simple question attachments

test/fixtures/questions.yml

@@ -47,7 +47,8 @@ fed5:
 
 fed6:
   quiz: fed
-  question: List one advantage of using IDs over classes. List one disadvantage.
+  question: Comment on how realistic the following image is.
+  attachment: "http://dev.perficientxd.com/skill_assets/commets_css.jpg"
   category: CSS
   input_type: text
   input_options: