Clearly distinguish commercial tooling & support

[lewismc]

The quickstart references the following commercial tooling

• Add Cameo Systems Modeler with Cameo MDK Quickstart.
• Add Mathematica with Mathematica MDK Quickstart.
• Add MATLAB with MATLAB MDK Quickstart.

We should be clear on what the expectations are for getting started with commercial tooling.

[dlamoris]

mathematica and matlab mdk are deprecated, so they can just be removed