To run a single file, use:

  ruby -I test <filename>

If you have an address geocoding service that you want to use HTTPS with
and then attempt to use an ip_geocoder that does not support HTTPS (e.g.
Telize) then the ip_geocoder lookups will fail because
Geocoder::Lookups::Base#make_api_request turns on opts[:use_ssl] based
on that single configuration value.

Rather than allowing for per-provider HTTPS configuration I have just
refactored Geocoder::Lookups::Base call a private `use_ssl?` method
which can be overridden by individual lookup provider implementations.
The default implementation of `use_ssl?` simply returns the value from
the config thus preserving the existing behavior but this allows
subclasses, like Telize, to override `use_ssl?` completely to return
false and thus fully opt-out of HTTPS regardless of what the
configuration was.

Make Geocoder.configure accept a hash (now preferred) and add
Geocoder.config method (for reading config). Deprecate old syntax.

  - need to set `use_ssl` to true
  - also cannot use `get_response` class method for https requests
  - add a smoke_test that calls out to google for real, to make sure
    things work end to end (not using test_helper for this, because it's invasive
    and opens code under test to do it's mocking)
  - add smoke_test to default test run