message: Updated README.md to include exported default configs
diff: - [API](#api)
  - [QueryBuilder](#querybuilder)
  - [formatQuery](#formatquery)
  + - [Defaults](#defaults)
  - [Development](#development)
  - [Changelog Generation](#changelog-generation)
  - [Credits](#credits)
  @@ -629,6 +630,15 @@ console.log(formatQuery(query, 'json_without_ids'));
  // };
  ```
  +### Defaults
  +
  +The following default configuration objects are exported for convenience.
  +
  +- `defaultCombinators`
  +- `defaultOperators`
  +- `defaultTranslations`
  +- `defaultValueProcessor`
  +
  ## Development
  ### Changelog Generation
  