compositions controllers

This folder contains complete compositions representing a single controller variant.

It also contains two files:

1. controller_cl.slx - the Simulink library composition of the variant subsystem for the controller.
2. controller_init.m - a scrip to initialize the variant subsystems of the controller. This script works by creating a single variant object in the base workspace for each directory in ./compositions/[TYPE] where TYPE is the input argument to the function. So type should be either "controllers", "plants", or "environments"