Lidar fixes

tracking/lidar_servicer.py

@@ -4,13 +4,14 @@ from tracking.lidar_cache import LidarCache
 from multiprocessing import Process
 import messaging.message_factory as mf
 from rplidar import RPLidar
-from Messaging import messages
+from messaging import messages
 
 
 class LidarServicer(PersonTrackingServicer):
 
     def __init__(self):
         # TODO: Put the rplidar creation in a factory or something, to make it possible to test this servicer.
+        # Also, it would allow creating the service without the lidar being connected. 
         self.cache = LidarCache(RPLidar('/dev/ttyUSB0'), measurements=100)
         self._mFactory = None
         self._port = None