todo: Adjust the following lines from README.md

Retro68

A GCC-based cross-compilation environment for 68K and PowerPC Macs. Why? Because there is no decent C++17 Compiler targeting Apple's System 6. If that's not a sufficient reason for you, I'm sure you will find something more useful elsewhere.

If you are crazy enough to try it out, please say hello at [email protected].

Installing/Building

### Prerequisites

• Linux, Mac OS X or Windows (via Cygwin)
• boost
• CMake 3.9 or later
• GCC dependencies: GMP 4.2+, MPFR 2.3.1+ and MPC 0.8.0+ ...