text: Title: Not working on Raspberry pi?
  Body: Sorry if this isn't the place for this but I can't find a forum.  When trying to run on a fresh install of current Raspbian, which has  Python 2.7 and 3.5.3 installed, I get to the point where I run the discovery and get:
  
  pi@pi0w:~ $ sudo amazon-dash discovery
  sudo: unable to resolve host pi0w
  Traceback (most recent call last):
    File "/usr/local/bin/amazon-dash", line 6, in <module>
      from amazon_dash.management import execute_from_command_line
    File "/usr/local/lib/python2.7/dist-packages/amazon_dash/management.py", line 9, in <module>
      from amazon_dash.exceptions import AmazonDashException
    File "/usr/local/lib/python2.7/dist-packages/amazon_dash/exceptions.py", line 12, in <module>
      class ConfigFileNotFoundError(AmazonDashException, FileNotFoundError):
  NameError: name 'FileNotFoundError' is not defined
  
  
  To try to force it to use Python3, I changed the first line of /usr/local/bin/amazon-dash to point to python3 instead of just python, as a test, and I get slightly different error:
  
  pi@pi0w:~ $ sudo amazon-dash discovery
  sudo: unable to resolve host pi0w
  Traceback (most recent call last):
    File "/usr/local/bin/amazon-dash", line 6, in <module>
      from amazon_dash.management import execute_from_command_line
  ImportError: No module named 'amazon_dash'
  
  I know I must be missing something really stupid, but dont know where to go from here.  I can't be the only one trying to do this on RaspPi ZeroW, so hoping you may know.
  
  Thanks for sharing your work.. I look forward to using this!!
  -Steve
  