Session18

Adding - file wrapper.py
You're not quite getting the idea of this decorator.  The purpose is to write something that will wrap the output of the function that is decorated in `<p></p>`.  Your's does this for the function you've defined, but imagine a slightly more complex function:

```python
@wrapper
def a_bit_more(string):
    return string*5

a_bit_more('stuff')
```
What happens?  How can you fix your decorator to fix the problem?
What happens now