Tiago Oliva

Luenberger/Ackermann pole placement for MIMO systems.

12

I was in need of a function to perform state observers pole placement, so I wrote a wrapper function around the `place(A, B, p)` function as `luenberger(A, C, p)` which...

`randn` was written both times for `mA` and `mB`. Perhaps `mB` should refer to `rand` instead of `randn`.