FIXED: phpsh doesn't work out of the box

To get phpsh up & running, I had to tune my PYTHONPATH.
![image](https://f.cloud.github.com/assets/353843/1325465/ee8a512e-34ca-11e3-9364-b8b38b92ffd1.png)


There was no caveat indicating it may be needed to do so.
I just added one to point people in the right direction.