Instraction Back-end:

1. Go: localhost:3000/admin

   login info:
     email: amdin@example.com
     password: password

2. downloads email as cvs/json/xml

rails commands :

>rails g model career full_name email phone_number attachment

>rails g model feedback email_address

set carrierwave mount_uploader :attachment, AttachmentUploader

>rails generate uploader Attachment

def extension_white_list
  %w(pdf doc htm html docx)
end

>rails g controller Home index about

>rails g controller Careers index cv new ruby ruby_f postgress postgress_f director director_f sme sme_f consumer consumer_f

> rails g active_admin:install
>rake db:migrate
>rails g active_admin:resource send
>rails g active_admin:resource feedback
>rails g active_admin:resource career