Roadmap

[tcopeland]

From my limited understanding of things, I think these are the things that would be good to do and generally should be done in this order:

• validate all the usage examples in the README
• separate tests into integration tests (the ones that use VCR) vs unit tests (the ones that don't make HTTP requests)
• modify README so that we're not recommending iframe usage; instead maybe present something with brands
• backfill tests
• trawl through the codebase and resolve the various TODOs
• fix base_url / base_uri issue reported by @willbt in #95
• refactor away application/json header setting - is it even still necessary?
• consider making domain model objects as shown in #67
• add helper methods to more clearly communicate how to accomplish various things (e.g., requiring wet signatures for an envelope)