Added photo model

db/schema.rb

@@ -245,6 +245,17 @@ ActiveRecord::Schema.define(version: 20140618062623) do
     t.string   "languages"
   end
 
+  create_table "photos", force: true do |t|
+    t.text     "description"
+    t.string   "picture_file_name"
+    t.string   "picture_content_type"
+    t.integer  "picture_file_size"
+    t.datetime "picture_updated_at"
+    t.integer  "conference_id"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
   create_table "qanswers", force: true do |t|
     t.integer "question_id"
     t.integer "answer_id"