Add wait after xv11.init() to prevent hang on getScanRanges()

Author: Samuel Bierwagen

neato_driver/src/neato_driver/neato_driver.py

@@ -33,6 +33,7 @@
 __author__ = "ferguson@cs.albany.edu (Michael Ferguson)"
 
 import serial
+import time
 
 BASE_WIDTH = 248    # millimeters
 MAX_SPEED = 300     # millimeters/second
@@ -106,6 +107,8 @@ def __init__(self, port="/dev/ttyACM0"):
         # turn things on
         self.setTestMode("on")
         self.setLDS("on")
+	print "[INFO] Waiting for LIDAR sensor to spin up"
+	time.sleep(1)
 
     def exit(self):
         self.setLDS("off")