Add missing files

app/helpers/admin/stripe_helper.rb

@@ -0,0 +1,19 @@
+module StripeHelper
+  class << self
+    attr_accessor :client, :options
+  end
+  @options = {
+    :site => 'https://connect.stripe.com',
+    :authorize_url => '/oauth/authorize',
+    :token_url => '/oauth/token'
+  }
+  @client = OAuth2::Client.new(
+    ENV['STRIPE_CLIENT_ID'],
+    ENV['STRIPE_INSTANCE_SECRET_KEY'],
+    options
+  )
+
+  def get_token(code, options={params: {scope: 'read_write'}})
+    @client.get_token(code, options)
+  end
+end

app/models/stripe_account.rb

@@ -0,0 +1,5 @@
+class StripeAccount < ActiveRecord::Base
+  belongs_to :enterprise
+  valdates_presence_of :stripe_user_id, :stripe_publishable_key
+  validates_uniqueness_of :stripe_user_id
+end