order status for transalte
發信時間點改為下單之後送出
integrate with sprite

- add pay_with_credit_card.html.erb
  stripe js from :  https://stripe.com/docs/stripe.js
  html form layout from: https://stripe.com/docs/tutorials/forms
- grm 'stripe'
- rails g controller cart_charge
  def create method : get order form current_user.orders.find_by_token(params[:order_id])
  and add stripe charge function from https://stripe.com/docs/tutorials/charges
letter_opener replace by mailgun setting
order create method logic wrapped by service object
card charge wrapped by service object
readd bootstrap alert
fix css error
- send mail when order paid success
- add order link in mail view
add config.action_mailer.default_url_options setting
ues settinglogic to manage password

- gem 'seettingslogic'
- add settings.rb in models package
- add application.yml in config folder