Add adjustment to freegeoip to use freegeoip.app

During database tests: "File does not exist: bson/integer"
Not important enough to spend time fixing, so omitting for now.

update faulty Tencent SSL information in API Guide

Add :country and :bounds as extra parameters to :here lookup

Add Tencent geocoding & reverse Geocoding API support

Don't log full response body as a warning.

Support for SmartyStreets International API

Fix: compass_point, 341-348 degrees missing value in 16-wind compass rose

Fixed typo

Allow to pass language parameter for bing and here lookups

with one that's more likely to work.

fix: baidu_ip lookups require 'geocoder/lookups/baidu'

Modify Pelias lookup to return multiple results

- Fixes #1353
  - Do not limit the results returned from Pelias to 1;
  - Removed test that was enforcing this condition;

Allow https for IPInfo.io queries without an API key

It appears that at some point they changed the "TLS only for paying
customers" rule.

See: https://ipinfo.io/developers#https-ssl
"Our API is available over a secure HTTPS connection for all users, even
on the free plan."

Defunct as of Feb 1, 2018: https://mapzen.com/blog/shutdown/

Add ip_lookup to test instructions

Update Nominatim Terms of Service policy link

This fixes erroring tests for ESRI lookup, which seem unrelated.
Something weird is going on. Need to investigate.