[DRAFT] Integration Guides

[nirvan543]

Reason for changes

This PR contains the integration guides for the PayPal iOS SDK. Each integration guide explains how to implement an end-to-end integration (app + server).

Summary of changes

• Addition of the PAYPAL_CHECKOUT_INTEGRATION_GUIDE.md

Checklist

• [ ] Added a changelog entry (will do after the draft is done)

Authors

List GitHub usernames for everyone who contributed to this pull request.

[KunJeongPark]

Very comprehensive. I'm wondering if it's a bit overwhelming as a single document. I know we have official docs in the works but is there a way we can have separate files for server SDK integration, sample integration. We can also try out details tags that can be expanded.

We are already linking out to demo apps also.

[nirvan543]

Very comprehensive. I'm wondering if it's a bit overwhelming as a single document. I know we have official docs in the works but is there a way we can have separate files for server SDK integration, sample integration. We can also try out details tags that can be expanded.

We are already linking out to demo apps also.

You're right about it being a lot. I thought about breaking this doc up into smaller docs that get linked out but I felt if we did that, the flow of the integration guide would be broken up and be a bit disjointed.

With that said, when we add integration guides for the other payment methods (ex: ACDC), there will be duplication of docs that can be avoided if we break up the docs. It's a matter of balancing integration experience and duplication. Right now, I'm leaning on the side of accepting the duplication to improve the integration docs experience.