Can we specify Numpy array as the input?

I saw this example in the README.md


```python
@rjit('double(double, double)', 'int(int, int)')
def add(x, y):
    return x + y
```

Is it possible to `rjit` a function that has Numpy array inputs?

i.e. something like


```python
@rjit('double[:](double[:], double[:])')
def add(x, y):
    return x + y
```