Switch from Python2 to Python3

examples/log2pgm.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 '''
 log2pgm.py : BreezySLAM Python demo.  Reads logfile with odometry and scan data

examples/log2pkl.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 '''
 log2pkl.py : BreezySLAM Python demo.  Reads logfile with odometry and scan data

examples/log2png.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 '''
 log2png.py : BreezySLAM Python demo.  Reads logfile with odometry and scan data

examples/logmovie.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 '''
 logdemo.py : BreezySLAM Python demo.  Reads logfile with odometry and scan data

examples/urgslam.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 '''
 urgslam.py : BreezySLAM Python with Hokuyo URG04LX Lidar

examples/xvslam.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 '''
 xvslam.py : BreezySLAM Python with GetSurreal XV Lidar