Added zoom function

Signed-off-by: Luiz Carlos Cavalcanti <cavalcanti.luiz@gmail.com>
Trying to fix kronecker product

Signed-off-by: Luiz Carlos Cavalcanti <cavalcanti.luiz@gmail.com>
Added readme file

Signed-off-by: Luiz Carlos Cavalcanti <cavalcanti.luiz@gmail.com>