fixes issue #664

* Adding SecurityTrails

The API offers 300 queries p.M. for free, which is enough for most smaller projects, they also offer the API for free for researchers etc.

* Update README.md

* Fixed alphabetical order and shortened description

* Jikan - Website + Description update

* Remove .net

WordNik apparently requires an API key: 
https://developer.wordnik.com/

http://ergast.com/mrd/https-support/

I'm adding the Enigma Public API as its free, open plus it allows developers to build applications that integrate with a very broad collection of public data.

https://github.com/Codeusa/Netflix-Roulette-API/issues/19

Fixer.io Github page has a deprecation warning "The old, deprecated Fixer API will be discontinued on June 1st, 2018".

Exchangeratesapi.io provides a compatible free service with HTTPS and CORS support and is also open source.

fixes issue #644

Changed value; `Unknown` -> `Yes`

Update details for TheSportsDB, The MealDB and TheCocktailDB to support SSL and CORS.

Also add a dedicated API landing page.