Multiple things done such as:
	-Rebuilding folder tree
	-Renaming files and class name
List of files changed :
	renamed:    include/towerdefense/computer/Bullet.h -> include/towerdefense/Bullet.h
	renamed:    include/towerdefense/computer/Ennemy.h -> include/towerdefense/Enemy.h
	modified:   include/towerdefense/Entity.h
	renamed:    include/towerdefense/graphics/ImageHandler.h -> include/towerdefense/ImageHandler.h
	new file:   include/towerdefense/Map.h
	modified:   include/towerdefense/Resource.h
	modified:   include/towerdefense/World.h
	deleted:    include/towerdefense/graphics/Map.h
	deleted:    include/towerdefense/manager/README.md
	renamed:    include/towerdefense/user/tower.h -> include/towerdefense/tower.h
	deleted:    include/towerdefense/user/README.md
	renamed:    res/maps/end.jpg -> res/img/end.jpg
	renamed:    res/computer/enemy2.jpg -> res/img/enemy.jpg
	renamed:    res/maps/field.jpg -> res/img/field.jpg
	renamed:    res/maps/path.jpg -> res/img/path.jpg
	renamed:    res/maps/start.jpg -> res/img/start.jpg
	renamed:    res/user/tower2.jpg -> res/img/tower.jpg
	renamed:    lib/Animation.cpp -> src/Animation.cpp
	new file:   src/Bullet.cpp
	new file:   src/Enemy.cpp
	renamed:    lib/Entity.cpp -> src/Entity.cpp
	renamed:    src/graphics/ImageHandler.cpp -> src/ImageHandler.cpp
	new file:   src/Map.cpp
	renamed:    lib/Random.cpp -> src/Random.cpp
	renamed:    lib/Resource.cpp -> src/Resource.cpp
	renamed:    lib/World.cpp -> src/World.cpp
	modified:   src/bin/main.cpp
	deleted:    src/computer/Bullet.cpp
	deleted:    src/computer/Ennemy.cpp
	deleted:    src/graphics/Map.cpp
	deleted:    src/manager/README.md
	new file:   src/tower.cpp
	deleted:    src/user/README.md
	deleted:    src/user/tower.cpp
	modified:   tower-defense.cbp
	modified:   tower-defense.depend