Week 6 - Second Design Document, Powerups and Alien Bully Traction Beam

During this week I focused on the development of the second iteration of the design document. Also I made a template to add Powerups to our game and proceed with developing a powerup that increases the speed of the UFO. Finally, I am trying to refactor the traction beam code to include the Alien Bully without increasing the Cow Counter of the player 1.