unable to run ttyUSBSpy beacuse of missing pcapy dep

[landroni]

I was unable to get ttyUSBSpy running on Ubuntu.

geek@liv-inspiron:~/Downloads/src/ttyUSBSpy$ python2.7 DlgttyUsbSpy.py 
Traceback (most recent call last):
  File "DlgttyUsbSpy.py", line 32, in <module>
    import pcapy
ImportError: No module named pcapy

To run it I had to additionally install 'python-pcapy'. Maybe this should be mentioned as a dep on the project page.