Modified the test to reflex expected outcome from the exercise

BROKEN: Animal.move
BROKEN: Helper.mirror
I misunderstood the move Method in the Animal Class. The Method
Parameters were the width and height of the world and not the new
position of the animal. The Logic behind Helpel.mirror and Animal.move
hast to be changed.
Added Test for the Parameter Cleaner
Passing my Own Test Still not Passing Public Test
The World is upside down

In my approach the World is seen as a Graph, that means if you draw it
on paper ( a square) the upper left corner has the coordinates x = 0 and
y = 0, while the bottom right corner has the max accepted values. This
doesnt explain (maybe i dont understand it..) why WEST is on the right
and EAST on left... I guess it doesnt matter how you call the
directions
Merge pull request #1 from chopmann/PATCH-1

Patch 1