misc errors

[neophob]

hey great work, there are however some issues:

Strip Mode:

•   column = [0 for x in range(width)]
  

•   for x in range(width):
  

•           column[x] = bytearray(height \* 3 + 1)
  

•   column = [0 for x in range(args.array_width)]
  

•   for x in range(args.array_width):
  

•           column[x] = bytearray(args.array_height \* 3 + 1)
  
  there are more errors I couldn't fix.

PixelInvaders Mode:

if args.mode == 'pixel_invaders':

•   print ("Start PixelInvaders listener "+UDP_IP+":"+str(UDP_PORT))
  

add some debug output.

requests: make listening ip and port cli parameter