Bref SLIM bridge

[maverick108]

Is your feature request related to a problem? Please describe.
A sample code for Slim micro-framework example.

Describe the solution you'd like
Something like bref/slim-bridge

Describe alternatives you've considered
There was an older bref SLIM bridge which is currently out of date and not working.
https://medium.com/@jonbaldie/setting-up-a-serverless-php-website-with-aws-lambda-and-bref-e1f9fb48d3cd