Add Soul (#438)

* Update README.md

Add Soul

* Update Soul 

Fix linting issues

README.md

@@ -217,6 +217,7 @@ Building API for your Data
 - [restSQL](https://github.com/restsql/restsql) - SQL generator with Java and HTTP APIs, uses a simple RESTful HTTP API with XML or JSON serialization.
 - [resquel](https://github.com/formio/resquel) - Easily convert your SQL database into a REST API.
 - [sandman2](https://github.com/jeffknupp/sandman2) - Automatically generate a RESTful API service for your legacy database.
+- [soul](https://github.com/thevahidal/soul) - Automatic SQLite RESTful and realtime API server.
 - [VulcanSQL](https://github.com/Canner/vulcan-sql) - Write templated SQL to automatically exposing RESTful APIs from your database/data warehouse/data lake.
 
 ## Application platforms