add simple form
:
Merge branch 'master' of https://github.com/payforme/payforme

* 'master' of https://github.com/payforme/payforme:
  add buyers_name to payments (migration)
  mark payments as paid in sphere
  adding start page
  Add buyers_name field
  mail templates for paid and not_paid
  Enhance mail template.
  Style email template
  Fix template. Remove senseless code.
  Send correct YES link in email.
  bugfix cause I'm stupid

Conflicts:
	app/controllers/payforme_controller.rb
	app/models/payment.rb
	app/views/payments/show.html.erb