=====DEBUG THE ODOMETRY ! =====

====Check the odometry ====
  * Launch the robot R from a remote client C. 
  * On C, plot positions and velocities:
    * Dont't forget to export the master and the IP of H (e.g. ''export ROS_MASTER_URI=http://wifibot-lab:11311'' and ''export ROS_IP=192.168.1.100'')
    * Run rqt_plot:  ''rosrun rqt_plot rqt_plot''
    * Add the topic: ''/odom/pose/pose/position/x''
    * Move R one meter forward. The plot should show a corresponding increase.
    * Repeat with the topic ''/odom/pose/pose/orientation/z''

====Check TF ====
  * ??