Add model for BankGateway

db/migrate/20190100000009_create_bank_gateways.rb

@@ -0,0 +1,12 @@
+class CreateBankGateways < ActiveRecord::Migration[4.2]
+  def change
+    create_table :bank_gateways do |t|
+      t.string :name, null: false
+      t.string :url, null: false
+      t.string :authorization
+      t.integer :unattended_user_id
+    end
+
+    add_reference :bank_accounts, :bank_gateway
+  end
+end