Document Transparent Redirect

[dmathieu]

The README and #8 says we should be able to use TransparentRedirect.confirm and get the returned object.

However, there is no documentation about it, and the way the tests are using it is quite not something I would believe to be a public API.

It would be awesome to have some documentation to generate the query necessary to use this.

[gabebw]

I'm a little confused - this should work the same way the Braintree docs say it does here: https://www.braintreepayments.com/docs/ruby/transactions/create_tr . What are we missing?

[dmathieu]

Well, yes, the server code should be the same.
However, to do the TR confirmation, we need to encrypt the query values and there's no clear documentatio about that.

[gabebw]

This is the bit that should be in the README?

query = query_string_from_transparent_redirect_response
Braintree::Configuration.gateway.transparent_redirect.parse_and_validate_query_string(query)

I assume getting the query string changes from person to person?

[gabebw]

I'm closing this because I'm not sure how to proceed.