Documentation.

[zachlatta]

We're missing a significant amount of documentation. Let's fix it. Documentation should be able to explain each class and method without needing to look at the source code. Use proper grammar.

Undocumented classes:

• ChangeClimbSystem

Inadequately documented classes:

• AutonomousCommand
• ClimberDefault
• CommandBase - Uses outdated default documentation
• DriveCommand
• Climber