Add System documentation

[bennowotny]

Rationale

Sustain the maintainability for the configuration/setup of the physical WRover system.

Required Actions

• WRover_Software contains documentation on how to start the WRover
• WRover_Software contains documentation on how to configure/setup the environment on the WRover
• WRover_Software contains documentation on parts of the system dependent on a particular WRover computer configuration