Log left ultrasonic distance in ultrasonicLeft function

Added print statement to log left ultrasonic distance.

Author: hairygael

gestures/ultraSonicLeft.py

@@ -1,2 +1,3 @@
 def ultrasonicLeft(returnText):
-  i01.speakBlocking(unicode(returnText,'utf-8')+str(i01.getUltrasonicLeftDistance()).replace(".0", ""))
+  i01.speakBlocking(unicode(returnText,'utf-8')+str(i01.getUltrasonicLeftDistance()).replace(".0", ""))
+  print("left side:"+ str(i01.getUltrasonicLeftDistance()).replace(".0", "")+ "cm")