- A new `Heroics.oauth_client_from_schema` function can be used to
  instantiate a client setup to make requests using an OAuth token.
- Add custom `inspect` and `to_s` implementations to the `Schema`
  class to prevent ridiculous output.
- Include `Bearer` text in `Authorization` header.
- Bump version.
Merge pull request #18 from heroku/oauth-bearer-authorization

- A new `Heroics.oauth_client_from_schema` function can be used to
  create a `Client` setup to use an OAuth token.

- The `README.md` contains some minor corrections and a small section
  demonstrating how to instantiate a `Client` with an OAuth token.

- The `Schema` class has custom `inspect` and `to_s` implementations
  to make `irb` sessions more pleasant.