adds to gitignore processing export directories
adds getPointsFromShape() method to utils
fixes bug with requesting cell at point which is out of cell range. And other

In lines 72 is the bug fixing. In line 39 we see that I added "0.1f"
parameter to getPointsFromShape() flag, so that we use only 10% of
points from the shape. (Because original shape of cat has like 300
points and it's not necessary. 30-70 points should be still enough.
Maybe in future need to set fixed number of points as parameter).
bugfix: X coordinate out of bounds wouldn't result in NULL

when cell was queried via some point, when X coordinate of the point
would be out of range, the method wouldn't return NULL, but would throw
RuntimeException