updated cli to accept google premier key

This avoids selecting all fields from all joined tables, which confuses
ActiveRecord (assigns returned object the wrong ID).

Change configuration options in the README from lat and lon to latitude and longitude

Change lat and lon configurations in README to latitude and longitude so it matches the gem's defaults and the generate migration instructions

For consistency with rest of code.

This reverts commit 6e0edacd.

Fix HTTPS support (thanks github.com/rsanheim).

  - 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