Updating Support/FluentTest.php

Adding Support\Fluent

Renaming package to slimphp-support. Updating all namespaces

Adding ForwardsCalls trait

Updating Dumpable README.md example

Merge remote-tracking branch 'origin'

Added Hub class to group pipelines

Improving Pipeline code examples in README.md

Added Pipeline support class and Pipeline facade

Adding Conditionable trait, and HigherOrderWhenProxy class