adds dates to polls

db/migrate/20161020112156_add_dates_to_polls.rb

@@ -0,0 +1,6 @@
+class AddDatesToPolls < ActiveRecord::Migration
+  def change
+    add_column :polls, :starts_at, :datetime
+    add_column :polls, :ends_at, :datetime
+  end
+end

db/schema.rb

@@ -294,7 +294,9 @@ ActiveRecord::Schema.define(version: 20161102133838) do
   end
 
   create_table "polls", force: :cascade do |t|
-    t.string "name"
+    t.string   "name"
+    t.datetime "starts_at"
+    t.datetime "ends_at"
   end
 
   create_table "proposal_notifications", force: :cascade do |t|