Cleaned up some comments

edited whitespace, added a const rotation change to Lander

Moved larger methods to .cpp files, removed extra whitespace

Added final comment for W5 submission

Edited spacing, added a few comments

Lander will 'crash' by turning upside down

Turned off all thrusters when landing, Lander is now in charge of knowing if the simulation is over

Fixed Ground to be less sensitive to landing position (+/- 1.0 instead of 0.0 - 1.0)

Updated drawing to not use Thrusters if out of fuel

Added collisions and fuel deductions

Fixed thruster's angle

Removed display for Angle

Simplified Simulator to call Lander::update and pass the pUI for Lander to handle. Also added some code for implementing physics

added comments

Added comments