title: pylibftdi not working python3, works fine on python2.7
body: <p>Hello there @codedstructure,</p>
  
  <p>I'm able to import the pylibftdi module and list my FTDI devices using python (2.7) and have installed pylibftdi using pip3, but running the list_devices example outputs nothing:</p>
  
  <pre><code>pi@raspberrypi:~ $ python -m pylibftdi.examples.list_devices
  FTDI:FT230X Basic UART:DA00TWHT
  FTDI:FT230X Basic UART:DA00TWHN
  FTDI:FT230X Basic UART:DA00TN7R
  pi@raspberrypi:~ $ python3 -m pylibftdi.examples.list_devices
  pi@raspberrypi:~ $ 
  </code></pre>
  
  <p>Running python 3.4, I can show libftdi is installed:</p>
  
  <pre><code>Python 3.4.2 (default, Oct 19 2014, 13:31:11) 
  [GCC 4.9.1] on linux
  Type "help", "copyright", "credits" or "license" for more information.
  &gt;&gt;&gt; from pylibftdi import Driver; print(Driver().libftdi_version())
  libftdi_version(major=1, minor=0, micro=0, version_str=b'1.0', snapshot_str=b'v1.0')
  </code></pre>
  
  <p>Is there something else I can check?</p>