Added obstacle prefab with dummy obstacle sprite.
Added pattern prefab.
Refactored game obstacle factory to use pattern prefab containing obstacle spawners.
Game obstacle motion updater now translates stuff :P
Cleaned up game controller.
TODO: player jump
Now able to remove obstacles from motion updater.
Added ObstacleDestroyer class + object prefab (use 2d physics box trigger).
Added RigidBody2d to obstacle prefab.
Player Jump added to GamePlayerController & player prefab.
Added missing unity meta for essai player controller cs file.