Add Hosted Onboarding Page (HOP)

[RickWieman]

Add the HOP and the getOnboardingUrl endpoint to the library.

[crrood]

Hey Rick, thanks for adding this - changes look good to me.

Have you tested locally?

[RickWieman]

@crrood, yes, it works on my machine.

Example:

require 'adyen-ruby-api-library'

adyen = Adyen::Client.new
adyen.api_key = 'YOUR_MARKETPLACE_API_KEY'

response = adyen.marketpay.hop.get_onboarding_url({
  :accountHolderCode => "YourUniqueAccountHolderCode",
  :returnUrl => "https://your.return-url.com/?submerchant=123"
})

[crrood]

Great! Thanks for confirming.

Merging now.