Keyboard teleop.launch

<!--
  Teleop from the robot keyboard
  -->
<launch>
    <include file="$(find floor_hugger)/test/motor_control_hack.launch"
        />

    <node pkg="smart" 
          type="key_publisher.py" 
          name="key_publisher" 
          respawn="true" 
          output="screen" />

    <node pkg="smart" 
          type="keys_to_twist_slow.py" 
          name="keys_to_twist_slow" 
          respawn="true" 
          output="screen" />
</launch>