barcode update

db/migrate/20180720032352_create_sellers.rb

@@ -0,0 +1,13 @@
+class CreateSellers < ActiveRecord::Migration[5.0]
+  def change
+    create_table :sellers do |t|
+      t.string :name
+      t.string :email
+      t.string :phone
+      t.string :address
+      t.string :key
+
+      t.timestamps
+    end
+  end
+end