Add a `q` query parameter to query against all fields (see #184)
Add `q` query parameter documentation to API index page (see #184)
Update suggestion result formats for new `q` query param (see #184)

- Add name fields to use for getting suggestions to query classes
- Update samples on index page to use `q` param
- Retain ranked order for suggestion results when using `q` param
Link to ES query string syntax supported on `q` param (see #184)
Merge pull request #193 from fsteeg/issue-184-queries

Add a `q` query parameter to query against all fields