Fixes link anchor in table of contents to the Error Handling section

missing a t in features in point three under 'Key features:'

Make Nominatim the default lookup and map provider.

Closes #1026.

viz: add `coordinates` attribute and remove `latitude` and `longitude`.

Fixes #1258 and #1302.

Add badges.

The README was just way too long.

* Update initializer template to use ipinfo_io

* Implement ipstack lookup

* Add Ipstack readme documentation

* Add post-install message

* Remove DSL from ipstack lookup

* Remove unnecessary logging

* Update post-install message

Freegeoip/IPstack no longer provides keyless service.

There's no documentation that 20 is the default value for the radius when using near.

* Update Mapzen and Pelias links

* add monthly free limits

* Update docs to include additional Mapbox options

Support for additional query params was added with commit
844da1c11c2e74777ee8aab40cf82cee0f68dfa8 but this was not reflected in
the documentation.

* Remove duplicate info; use consistent wording

Removed an unneeded example from the Mapbox docs & use a single level of
indentation. Also, change "options" to "params" in both the Google and
Mapbox examples.

realized most other providers do not include links to pricing pages so I wanted to remain consistent with that

updated docs for several street service providers to reflect current pricing, and eliminated geocoder.us as it appears to no longer exist

* Add support for DB-IP.com geocoding service

* Added support for https with paid accounts

* Use `use_https` to distinguish between paid/unpaid API usage

* Clean rubocop warnings

* Update LocationIQ geocoding provider with limits and handle errors

* Correct syntax errors

* Update over limit fixture

* Set HTTPS as the assertion for the URL

* Add missing fixtures for unit tests

* Correct the mistakes in doc

* Let users decide SSL usage

* Revert incorrectly asserted URL without https

* Remove use_ssl from lookup subclass

* Update the assertion of the URL to HTTP and not HTTPS

Add missing commas to hashes in test stubs.